fortran兼容问题解决方案
fortran常见问题解决
fortran常见问题解决为了减少重复回答问题，特编此帖，并不定期添加和更新内容。
错误难免，欢迎讨论，仅供参考。
很多人问哪里可以找到Fortran编译器，有不少热心学友提供网址，特汇集在这里。
虽然俺检验过这些链接，但是它们不一定总有效。
Fortran 编译器下载：CVFFTN95 (License: Free for personal use)以下操作，如无特别说明，都是以为例。
1. 如何加大Stack size?选Project => Settings => Link => Category: Output =>Stack allocationsReserve: 这里填新值（默认为1M，若需要10M，则填）2. 如何用Fortran批量生成文件？设要生成4000个文件，文件名为AA1-AA4000，如何写循环生成文件,而不用写4000次write 命令呢?用内部文件：character(len=80) :: filename,forminteger :: ido i=1,4000select case (i)case (1:9)write(form,'(i1)') icase (10:99)write(form,'(i2)') icase (100:999)write(form,'(i3)') icase (1000:9999)write(form,'(i4)') iend selectwrite(filename,*) "AA",trim(form),".TXT"open(10,file=filename)write(10,*) iclose(10)end dostopend3. 如何用Fortran动态生成输出格式？设有一个数组data(100)，输出时，希望每行输出num个数，而num由用户输入，如何实现？用内部文件：character(len=80) :: formreal :: data(100)integer :: i,numdata = (/ (i,i=1,100) /)/read(*,*) numwrite(form,*) "(",num,""write(*,form) datastopend4. MS 是不是很垃圾？是垃圾，其中Bug太多，多到不可用的地步！在这个主题里，换了CVF后问题就没了的人已有相当的数目。
fortran常见错误
FAQ之常见错误2014-02-02 13:45:35 来源：Fcode研讨团队评论：2点击：4419本文从编译错误，链接错误，运行时错误，计算结果错误等四个方面介绍了常见的错误及解决思路。
适合初学者阅读。
首先应该明确：错误有哪几种？我们当前遇到的是何种错误？阐述这些问题前，我们先讨论一下常规的应用程序开发的过程：1>>编写代码，使用一个或多个源代码文件。
2>>对第一步的每一个源代码文件执行编译操作。
得到一个或若干个目标代码。
3>>将目标代码，运行时库（Run-time Library）和其他使用到的函数库链接起来。
得到一个可执行文件（EXE 或其他）4>>编写程序的说明书，必要的（输入）数据文件5>>将上述得到的结果发布给用户。
（发布的方式可以是刻录成光盘，销售，放在网站上供别人下载，或者其他）6>>用户得到程序后，运行，输入数据，得到计算结果。
对于很多 Fortran 程序员来说，可能用户就是自己，也可能仅仅是自己教研室的同事同学。
所以第4，5，6步骤很多时候不明显。
而如果使用集成开发环境（IDE）进行开发，第1，2，3步骤又可以一键完成。
因此，很多初学者就认为，写程序就是：输入代码，运行，得到结果。
这样的理解太狭义。
不管我们面对什么使用者来写代码，程序开发应该是上述的过程。
我们的编译器，编译环境，也是为这个过程而设计的。
于是，我们将错误分为四种：一. 编译错误（发生在第2步）编译错误，一般是源代码书写格式不正确，不符合语法要求。
二. 链接错误（发生在第3步）链接错误，一般是源代码结构不完整，运行时库或函数库使用不合理。
三. 运行时错误（发生在第6步）运行时错误，一般是执行代码时，遇到了事先未料及的错误。
比如内存不足了，磁盘空间不够了，输入文件格式不对了，输出文件写入失败了等等。
四. 计算结果不符合预期（程序代码不规范，或不符合你的设想）计算结果不符合预期，可能性就很多了。
fortran常见错误及其原因
常见fortran错误1. Incrementally linked image--PC correlation disabled.！编译终止2. forrtl: severe (157): Program Exception - access violation！The program tried to read from or write to a virtual address for which it does not have the appropriate access. Try recompiling with the /check:bounds and /warn:argument_checking options set, to see if the problem is an out-of-bounds memory reference or a argument mismatch that causes data to be treated as an address.Other causes of this error include:Mismatches in C vs. STDCALL calling mechanisms, causing the stack to become corrupted References to unallocated pointers Attempting to access a protected (for example, read-only) address3 "forrtl: severe (64): input conversion error, unit 2, file D:\FORTRAN2\testi！文件testi正在读写，直到读写到2时错误。
举例：程序想读写整数，却碰到变量故终止。
4 error LNKZOOI : unresolved external symbol _ SN @ 4 fatal error LNKllZO : 1 unresolved externals! 出现了未指定的外部函数符号Sn 。
fortran常见错误及其原因
fortran常见错误及其原因常见fortran错误1.Incrementally linked image--PC correlation disabled.！编译终止2. forrtl:severe(157):Program Exception - access violationbounds and /warn:argument_checking options set, to see if theproblem is an out-of-bounds memory reference or a argument mismatch that causes data to be treated as anaddress.Other causes of this error include:severe(64):input conversion error, unit 2, file D:\FORTRAN2\testi！文件testi正在读写，直到读写到2时错误。
举例：程序想读写整数，却碰到变量故终止。
4 error LNKZOOI :unresolved external symbol _ SN @ 4 fatal error LNKllZO :1 unresolved externals!出现了未指定的外部函数符号Sn。
这是因为在函数子程序中错把函数名Sn写成了ns。
根据错误信息中的提示，用户在编辑窗口寻找有错位置进行修改。
连接错误往往出现在有函数调用或子程序调用的程序中，常见的错误性质有：未定的函数符号、找不到主程序或子程序、实参与虚参的个数不一致等。
注意：连接错误只给出错误代号和错误性质，不给出具体语句的行号。
5 :: error FOR229O :implicit type for 1 detected between 1 and = C :\ abc．: error FOR33Og :undefined label 10编译系统提示用户：在程序的第5行，变量i未经类型说明；在程序的第H行，标号10未定义。
fortran安装调试运行过程中的可能错误及其原因
fortran安装、调试、运行过程中的【可能错误及其原因】-中英对照楼主鲍炜炜2011-04-18 14:37（欢迎加入气象QQ讨论群：149280902，点击即可加入）安装1．关于Fortran编译器的安装和配置？在安装FEPG之前一般要先安装好Powerstation Fortran 4.0编译器，并设置好Fortran编译器的path、lib 和include路径。
如果你的Powerstation Fortran 4.0编译器安装在目录C:\MSDEV下，设置如下：·在WIN 2000/XP下的设置:a.鼠标移到我的电脑图标，单击右键，然后点击属性；b.点击高级属性；c.点击环境变量，进行系统变量设置；系统变量如下图：d. 如果图上的include、lib、path几个变量没有，请点击新建；如有，点击编辑；按下面变量值进行修改：变量：path值：c:\MSDEV\bin; %path%变量：lib 值：c:\MSDEV\lib;%lib%变量：include值：c:\MSDEV\include;%include%注意：如果path、lib和include变量中有相应新增加的内容，可不增加。
如果编译器装在其它目录，则把C:\MSDEV换为该目录名。
实际上，在安装Powerstation Fortran 4.0时，会出现一个对话框，询问是否增加环境变量，如果选是，这些变量就已经配置好了。
安装fepg，需要用户有管理员权限。
2．运行FEPG命令生成Fortran源程序时，出现fl32不是内部命令也不是外部命令的错误(或fl32 is not internal command)？没配置好Fortran编译器的path路径。
按照上面第1个问题中的解答配置好path路径。
3. 运行FEPG命令生成Fortran源程序时，有些fortran源程序没连接成可执行程序，出现不能发现fepg.lib 库文件的错误？安装FEPG之前，没安装和配置好Fortran编译器所致。
Fortran FAQ
1.1 FAQ之常见错误本文从编译错误，链接错误，运行时错误，计算结果错误等四个方面介绍了常见的错误及解决思路。
适合初学者阅读。
首先应该明确：错误有哪几种？我们当前遇到的是何种错误？阐述这些问题前，我们先讨论一下常规的应用程序开发的过程：1>>编写代码，使用一个或多个源代码文件。
2>>对第一步的每一个源代码文件执行编译操作。
得到一个或若干个目标代码。
3>>将目标代码，运行时库（Run-time Library）和其他使用到的函数库链接起来。
得到一个可执行文件（EXE 或其他）4>>编写程序的说明书，必要的（输入）数据文件5>>将上述得到的结果发布给用户。
（发布的方式可以是刻录成光盘，销售，放在网站上供别人下载，或者其他）6>>用户得到程序后，运行，输入数据，得到计算结果。
对于很多Fortran 程序员来说，可能用户就是自己，也可能仅仅是自己教研室的同事同学。
所以第4，5，6步骤很多时候不明显。
而如果使用集成开发环境（IDE）进行开发，第1，2，3步骤又可以一键完成。
因此，很多初学者就认为，写程序就是：输入代码，运行，得到结果。
这样的理解太狭义。
不管我们面对什么使用者来写代码，程序开发应该是上述的过程。
我们的编译器，编译环境，也是为这个过程而设计的。
于是，我们将错误分为四种：一. 编译错误（发生在第2步）编译错误，一般是源代码书写格式不正确，不符合语法要求。
二. 链接错误（发生在第3步）链接错误，一般是源代码结构不完整，运行时库或函数库使用不合理。
三. 运行时错误（发生在第6步）运行时错误，一般是执行代码时，遇到了事先未料及的错误。
比如内存不足了，磁盘空间不够了，输入文件格式不对了，输出文件写入失败了等等。
四. 计算结果不符合预期（程序代码不规范，或不符合你的设想）计算结果不符合预期，可能性就很多了。
语法与你的想法不一致，超出函数库的适用范围，执行流程控制不当等等。
Intel Visual Fortran 与 Visual Studio 集成的若干问题
Intel Visual Fortran 与Visual Studio 集成的若干问题2009/01/11 10:12一.无法集成在Visual Studio 2005中集成Intel Fortran 11 。
首先应装 Visual Studio 2005，至少要选择VC++组件，安装好了之后再安装Intel Fortran 11。
安装过程中注意有没有 Intel Visual Fortran Comiler 11.0 Integrations in Microsoft Visual Studio 组件，这个组件的作用就是使之集成到 VS 开发环境。
一般都是默认安装的。
两个软件都安装完了之后启动VS2005，看看Help->About Microsoft Visual Studio 里是否显示组件已经安装成功，如图：或者查看新建项目时有无如果没有出现与Fortran 有关的工程类型，则说明集成并未安装成功。
此时可到VS 的安装目录中,比如：C:\Program Files\Microsoft Visual Studio8\Intel Fortran\VFPackages里双击批处理文件integrate.bat之后再启动VS2005看看是否集成成功。
一般的错误为：VFProj.Dll没有成功注册。
通过 Regsvr32 工具对其注册。
在命令行内输入：Regsvr32 "C:\Program Files\Microsoft Visual Studio 8\IntelFortran\VFPackages\VFProj.DLL"若注册失败并显示错误码为0x80070005，则是因为注册表权限问题导致。
将电脑重新启动，按F8进入安装模式，在DOS窗口中输入如下命令：C:\WINDOWS\system32\secedit /configure /cfg %windir%\repair\secsetup.inf /db secsetup.sdb /verbose等到100%的时候,重新启动电脑。
fortran常见错误及其原因
常见fortran错误1. Incrementally linked image--PC correlation disabled.！编译终止2. forrtl: severe (157): Program Exception - access violation！The program tried to read from or write to a virtual address for which it does not have the appropriate access. Try recompiling with the /check:bounds and /warn:argument_checking options set, to see if the problem is an out-of-bounds memory reference or a argument mismatch that causes data to be treated as an address.Other causes of this error include:Mismatches in C vs. STDCALL calling mechanisms, causing the stack to become corrupted References to unallocated pointers Attempting to access a protected (for example, read-only) address3 "forrtl: severe (64): input conversion error, unit 2, file D:\FORTRAN2\testi！文件testi正在读写，直到读写到2时错误。
举例：程序想读写整数，却碰到变量故终止。
4 error LNKZOOI : unresolved external symbol _ SN @ 4 fatal error LNKllZO : 1 unresolved externals! 出现了未指定的外部函数符号Sn 。
fortran read error 处理
fortran read error 处理Fortran Read Error Handling: A Step-by-Step GuideIn Fortran, read statements are used to input data from a specified source, such as a file or the standard input. However, there are cases where errors can occur during the execution of a read statement, which can lead to program failures or incorrect results. Therefore, it is essential to understand how to effectively handle read errors in Fortran. In this article, we will take a step-by-step approach to guide you through the process of handling Fortran read errors.Step 1: Enable Error HandlingTo begin, you need to enable error handling in your Fortran program. This can be achieved by including the `ERR` parameter in your read statement. The `ERR` parameter allows you to specify an error handling routine that will be executed if an error occurs during the execution of the read statement. For example:READ(UNIT, *, ERR = errorHandler) variableIn this example, `UNIT` is the unit number associated with the input source, `variable` is the variable to store the input data, and`errorHandler` is the name of the error handling routine.Step 2: Define the Error Handling RoutineNext, you need to define the error handling routine that will be executed when an error occurs during the read statement. This routine should handle the error appropriately, such as displaying an error message or taking corrective actions. For example:SUBROUTINE errorHandler()IMPLICIT NONEINTEGER :: errorCodeerrorCode = IOSTAT ! Get the error code from IOSTATSELECT CASE (errorCode)CASE (-1)WRITE(*, *) "End-of-file reached."CASE (-i)WRITE(*, *) "Input error occurred (code = ", ABS(i), ")."CASE (i)WRITE(*, *) "Output error occurred (code = ", i, ")."CASE DEFAULTWRITE(*, *) "Unknown error occurred."END SELECT! Take appropriate actions based on the error...END SUBROUTINE errorHandlerIn this example, we use the `SELECT CASE` construct to handle different error codes. The `IOSTAT` function returns the error code, which can be negative for input errors and positive for output errors. You can customize the error handling routine to suit your specific needs, such as logging errors or terminating the program.Step 3: Implement Error Detection and RecoveryAfter defining the error handling routine, you can now implement error detection and recovery mechanisms in your program. One common approach is to use a loop to continuously read input until a valid data isobtained or an error occurs. For example:INTEGER :: i, errorCodeDOREAD(UNIT, *, ERR = errorHandler, IOSTAT = errorCode) iIF (errorCode == 0) THEN! Valid input obtained, exit the loopEXITELSE! Error occurred, display error message and continue readingCALL errorHandler()END IFEND DOIn this example, the loop continues until a valid input is obtained(`errorCode == 0`), at which point the program exits the loop. If an error occurs, the `errorHandler` routine is called to handle the error and the loop continues.Step 4: Test and DebugFinally, it is crucial to thoroughly test your Fortran program with different input scenarios to ensure the error handling mechanism is functioning correctly. Test for common read errors, such as invalid input types, reaching end-of-file prematurely, or unexpected input format. Use test cases that cover a wide range of possible inputs to verify the effectiveness of your error handling implementation.In conclusion, handling Fortran read errors involves enabling error handling, defining an error handling routine, implementing error detection and recovery mechanisms, and testing and debugging the program. By following this step-by-step guide, you can ensure that your Fortran programs handle read errors effectively, improving the stability and reliability of your code.。
Fortran运行中给出的系统错误及解决方法
⎰-102e xdxSevere_MessagesMust be corrected. The program's execution is terminated when the error is encountered, unless for I/O statements the program uses the END or ERR I/O statement specifiers to transfer control,perhaps to a routine that uses the IOSTAT specifier (see your DEC Fortran user manual).The severe messages follow (in alphabetical order):o MESSAGE: Adjustable array dimension errorNUMBER: 93EXPLANATION: Upon entry to a subprogram, one of the followingerrors was detected during the evaluation of dimensioninginformation:- An upper-dimension bound was less than alower-dimension bound.- The dimensions implied an array that was largerthan addressable memory.o MESSAGE: Attempt to access non-existent recordNUMBER: 36EXPLANATION: A direct-access READ or FIND statement attemptedto access beyond the end of a relative file (or a sequentialfile on disk with fixed-length records) or access a record that was previously deleted in a relative file.o Array index out of bounds (SIGTRAP)NUMBER: 138EXPLANATION: Break exception generated a SIGTRAP signal(described in signal(3)). Core dump file created.The cause is an array subscript that is outside the dimensionedboundaries of that array. Try recompiling using the -checkbounds option (perhaps with the f77_dump_flag environmentvariable set) or examine the core dump file to determine thesource code in error.o MESSAGE: Array index out of bounds for index n (SIGTRAP) NUMBER: 139EXPLANATION: Break exception generated a SIGTRAP signal(described in signal(3)). Core dump file created.The cause is an array subscript that is outside the dimensionedboundaries of the array index n. Try recompiling using the-check bounds option (perhaps with the f77_dump_flagenvironment variable set) or examine the core dump file todetermine the source code in error.o MESSAGE: BACKSPACE errorNUMBER: 23EXPLANATION: An error condition was detected during executionof a BACKSPACE statement.o MESSAGE: Cannot overwrite existing fileNUMBER: 10EXPLANATION: Specified file xxx already exists when OPENstatement specified STATUS='NEW' (create new file) using I/Ounit x. Make sure correct file name, directory path, unit, and so forth were specified in the source program. Decide whether to:- Rename or remove the existing file before rerunningthe program.- Modify the source file to specify different filespecification, I/O unit, or OPEN statement STATUS='UNKNOWN'. o MESSAGE: Cannot stat fileNUMBER: 108EXPLANATION: Attempted stat operation on the indicated filefailed. Make sure correct file and unit were specified.o MESSAGE: CLOSE errorNUMBER: 28EXPLANATION: An error condition was detected by the DECFortran RTL I/O system during execution of a CLOSE statement. o MESSAGE: DELETE errorNUMBER: 55EXPLANATION: An error condition was detected by the DECFortran RTL I/O system during execution of a DELETE statement. o MESSAGE: Divide by zero check (SIGTRAP)NUMBER: 137EXPLANATION: Break exception generated a SIGTRAP signal(described in signal(3)). Core dump file created.Examine core dump file for possible cause.o MESSAGE: Duplicate file specificationsNUMBER: 21EXPLANATION: Multiple attempts were made to specify fileattributes without an intervening close operation. A DEFINEFILE statement was followed by another DEFINE FILE statement or an OPEN statement.o MESSAGE: ENDFILE errorNUMBER: 33EXPLANATION: One of the following conditions occurred:- The file was not a sequential organization file withvariable-length records.- The file was not opened for sequential or append access.- An unformatted file did not contain segmented records.- The DEC Fortran RTL I/O system detected an error duringexecution of an ENDFILE statement.o MESSAGE: End-of-file during readNUMBER: 24EXPLANATION: One of the following conditions occurred:- A DEC Fortran RTL I/O system end-of-file conditionwas encountered during execution of a READ statementthat did not contain an END, ERR, or IOSTAT specification. - An end-of-file record written by the ENDFILE statementwas encountered during execution of a READ statementthat did not contain an END, ERR, or IOSTAT specification. - An attempt was made to read past the end of an internalfile character string or array during execution of a READ statement that did not contain an END, ERR, or IOSTATspecification.o MESSAGE: Error during readNUMBER: 39EXPLANATION: The DEC Fortran RTL I/O system detected an errorcondition during execution of a READ statement.o MESSAGE: Error during writeNUMBER: 38EXPLANATION: The DEC Fortran RTL I/O system detected an error condition during execution of a WRITE statement.o MESSAGE: File name specification errorNUMBER: 43EXPLANATION: The file name was specified erroneously.o MESSAGE: File not foundNUMBER: 29EXPLANATION: A file with the specified name could not be found during an open operation.o MESSAGE: FIND errorNUMBER: 57EXPLANATION: The DEC Fortran RTL I/O system detected an error condition during execution of a FIND statement.o MESSAGE: Floating overflow in math libraryNUMBER: 88EXPLANATION: A floating-point overflow condition was detected during execution of a math library procedure.o MESSAGE: Floating underflow in math libraryNUMBER: 89EXPLANATION: A floating-point underflow condition was detected during execution of a math library procedure. The resultreturned was zero.o MESSAGE: Format/variable-type mismatchNUMBER: 61EXPLANATION: An attempt was made either to read or write areal variable with an integer field descriptor (I or L), or to read or write an integer or logical variable with a real field descriptor (D, E, F, or G).o MESSAGE: Formatted I/O to unit open for unformatted transfers NUMBER: 257EXPLANATION: Attempted formatted I/O (such as list-directed ornamelist I/O) to a unit where the OPEN statement indicated the file was unformatted (FORM keyword). Check that the correct unit (file) was specified.If the FORM keyword was not specified in the OPEN statement andthe file should contain formatted data, specifyFORM='FORMATTED' in the OPEN statement. Otherwise, ifappropriate, use unformatted I/O.o MESSAGE: Inconsistent file organizationNUMBER: 51EXPLANATION: The file organization specified in an OPENstatement did not match the organization of the existing file. o MESSAGE: Inconsistent OPEN/CLOSE parametersNUMBER: 46EXPLANATION: Specifications in an OPEN or CLOSE statement wereinconsistent. Some invalid combinations follow:- READONLY with STATUS='NEW' or STATUS='SCRATCH'- ACCESS='APPEND' with READONLY, STATUS='NEW' orSTATUS='SCRATCH'- DISPOSE='SAVE', 'PRINT', or 'SUBMIT' withSTATUS='SCRATCH'- DISPOSE='DELETE' with READONLYo MESSAGE: Inconsistent record lengthNUMBER: 37EXPLANATION: An attempt was made to open a direct access filewithout specifying a record length.o MESSAGE: Inconsistent record typeEXPLANATION: The RECORDTYPE value in an OPEN statement did notmatch the record type attribute of the existing file that was opened.o MESSAGE: Infinite format loopNUMBER: 60EXPLANATION: The format associated with an I/O statement thatincluded an I/O list had no field descriptors to use intransferring those values.o MESSAGE: Input conversion errorNUMBER: 64EXPLANATION: During a formatted input operation, an invalidcharacter was detected in an input field, or the input valueoverflowed the range representable in the input variable. The value of the variable was set to zero.o MESSAGE: Input record too longNUMBER: 22EXPLANATION: A record was read that exceeded the explicit ordefault record length specified when the file was opened. To read the file, use an OPEN statement with a RECL= value (record length) of the appropriate size.o MESSAGE: Input statement requires too much dataEXPLANATION: An unformatted READ statement attempted to readmore data than existed in the record being read.o MESSAGE: Insufficient virtual memoryNUMBER: 41EXPLANATION: The DEC Fortran RTL was unable to acquireadditional virtual memory from the operating system. Users of the C and Korn shells may be able to overcome this problem by increasing the per-process data limit using the limit (C shell) or ulimit (Korn shell) commands. For more information, see the csh(1) and ksh(1) reference pages.If the maximum per-process data size is already allocated,increase the value of the maxdsiz parameter in the system'sconfiguration file. Note that edits to the configuration file do not take effect until the operating system kernel has been rebuilt, and the system has been rebooted. For moreinformation, see the doconfig(1) reference page and youroperating system guide to system configuration.o MESSAGE: Integer overflowNUMBER: 70EXPLANATION: During an arithmetic operation, an integer valueexceeded byte, word, or longword range. The result of theoperation was the correct low-order part. See your DEC Fortran user manual for ranges of the various integer data types.o MESSAGE: Integer zero divideNUMBER: 71EXPLANATION: During an integer arithmetic operation, anattempt was made to divide by zero. The result of theoperation was set to the dividend, which is equivalent todivision by 1.o MESSAGE: Internal consistency check failureNUMBER: 8EXPLANATION: Internal severe error. Please check that theprogram is correct. Recompile if an error exists in theprogram.If this error persists, submit an SPR.o MESSAGE: Invalid argument to Fortran Run-Time Library NUMBER: 48EXPLANATION: The compiler passed an invalid or improperlycoded argument to the DEC Fortran RTL. This can occur if the compiler is newer than the RTL in use.o MESSAGE: Invalid argument to math libraryNUMBER: 81EXPLANATION: One of the mathematical procedures detected aninvalid argument value.o MESSAGE: Invalid logical unit numberNUMBER: 32EXPLANATION: A logical unit number greater than or less than zero was used in an I/O statement.o MESSAGE: Invalid reference to variable in NAMELIST input NUMBER: 19EXPLANATION: One of the following conditions occurred:- The variable was not a member of the namelist group.- An attempt was made to subscript the scalar variable.- A subscript of the array variable was out-of-bounds.- An array variable was specified with too many or toofew subscripts for the variable.- An attempt was made to specify a substring of a non-character variable or array name.- A substring specifier of the character variable wasout-of-bounds.- A subscript or substring specifier of the variable wasnot an integer constant.- An attempt was made to specify a substring using anunsubscripted array variable.o MESSAGE: Kernel breakpoint (SIGTRAP)NUMBER: 131EXPLANATION: Break exception generated a SIGTRAP signal(described in signal(3)). Core dump file created.Examine core dump for possible cause.o MESSAGE: Keyword value error in OPEN statementNUMBER: 45EXPLANATION: An improper value was specified for an OPEN orCLOSE statement keyword requiring a value.o MESSAGE: List-directed I/O syntax errorNUMBER: 59EXPLANATION: The data in a list-directed input record had aninvalid format, or the type of the constant was incompatiblewith the corresponding variable. The value of the variable was unchanged.o MESSAGE: Logarithm of zero or negative valueNUMBER: 83EXPLANATION: An attempt was made to take the logarithm of zeroor a negative number. The result returned was the reservedoperand, -0.o MESSAGE: Mixed file access modesNUMBER: 31EXPLANATION: An attempt was made to use any of the followingcombinations:- Formatted and unformatted operations on the same unit.- An invalid combination of access modes on a unit,such as direct and sequential.- A DEC Fortran RTL I/O statement on a logical unit thatwas opened by a program coded in another language. o MESSAGE: No such deviceNUMBER: 42EXPLANATION: A pathname included an invalid or unknown device name when an OPEN operation was attempted.o MESSAGE: Not a Fortran-specific errorNUMBER: 1EXPLANATION: An error occurred in the user program or in the RTL that was not a DEC Fortran-specific error.o MESSAGE: Not taken branch delay emulation (SIGTRAP) NUMBER: 134EXPLANATION: Break exception generated a SIGTRAP signal(described in signal(3)). Core dump file created. Examine core dump for possible cause.o MESSAGE: OPEN or DEFINE FILE requiredNUMBER: 26EXPLANATION: A direct access READ, WRITE, or FIND, statementwas attempted for a file when no DEFINE FILE or OPEN statement with ACCESS='DIRECT' was performed for that file.o MESSAGE: Open failureNUMBER: 30EXPLANATION: An error was detected by the DEC Fortran RTL I/Osystem while attempting to open a file in an OPEN, INQUIRE, or other I/O statement. This message is issued when the errorcondition is not one of the more common conditions for which specific error messages are provided. It can occur if an OPEN operation is attempted for one of the following files:- A segmented file that was not on a disk or a rawmagnetic tape.- A standard I/O file that had been closed.o MESSAGE: Operation requires seek abilityNUMBER: 120EXPLANATION: Attempted an operation on a file that requiresthe ability to perform seeks on that file. Make sure thecorrect unit, directory path, and file were specified.o MESSAGE: Output statement overflows recordNUMBER: 66EXPLANATION: An output statement attempted to transfer moredata than would fit in the maximum record size.o MESSAGE: Overflow check (SIGTRAP)NUMBER: 136EXPLANATION: Break exception generated a SIGTRAP signal(described in signal(3)). Core dump file created.The cause is an integer overflow. Try recompiling using the-check overflow option (perhaps with the f77_dump_flagenvironment variable set) or examine the core dump file todetermine the source code in error.o MESSAGE: Pathname errorNUMBER: 43EXPLANATION: A pathname (or file name) given to an OPEN orINQUIRE statement was not acceptable to the DEC Fortran RTL I/O system.o MESSAGE: Permission to access file denied, unit x, file xxx NUMBER: 9EXPLANATION: Check the mode (protection) of the specifiedfile. Make sure the correct file was being accessed. Change the protection, specified file, or process used beforererunning program.o MESSAGE: Record number outside rangeNUMBER: 25EXPLANATION: A direct access READ, WRITE, or FIND statementspecified a record number outside the range specified when the file was opened.o MESSAGE: Recursive I/O operationNUMBER: 40EXPLANATION: While processing an I/O statement for a logicalunit, another I/O operation on the same logical unit wasattempted, such as a function subprogram that performs I/O to the same logical unit was referenced in an expression in an I/O list or variable format expression.o MESSAGE: REWIND errorNUMBER: 20EXPLANATION: One of the following conditions occurred:- The file was not a sequential file.- The file was not opened for sequential or append access.- The DEC Fortran RTL I/O system detected an error conditionduring execution of a REWIND statement.o MESSAGE: Segmented record format errorNUMBER: 35EXPLANATION: An invalid segmented record control data word wasdetected in an unformatted sequential file. The file wasprobably either created with RECORDTYPE='FIXED' or 'VARIABLE' in effect, or was created by a program written in a languageother than Fortran.o MESSAGE: Significance lost in math libraryNUMBER: 87EXPLANATION: The magnitude of an argument or the magnitude ofthe ratio of the arguments to a math library function was solarge that all significance in the result was lost. The result returned was the reserved operand, -0.o MESSAGE: Square root of negative valueNUMBER: 84EXPLANATION: An argument required the evaluation of the squareroot of a negative value. The result returned was the reserved operand, -0.o MESSAGE: Subscript out of rangeNUMBER: 77EXPLANATION: An array reference was detected outside thedeclared array bounds.o MESSAGE: Syntax error in formatNUMBER: 62EXPLANATION: A syntax error was encountered while the RTL wasprocessing a format stored in an array or character variable. o MESSAGE: Syntax error in NAMELIST inputNUMBER: 17EXPLANATION: The syntax of input to a namelist READ statement was incorrect.o MESSAGE: Taken branch delay emulation (SIGTRAP) NUMBER: 133EXPLANATION: Break exception generated a SIGTRAP signal(described in signal(3)). Core dump file created. Examine core dump for possible cause.o MESSAGE: Too many records in I/O statementNUMBER: 27EXPLANATION: An attempt was made to do one of the following: - Read or write more than one record with an ENCODEor DECODE statement.- Write more records than existed.o MESSAGE: Too many values for NAMELIST variableNUMBER: 18EXPLANATION: An attempt was made to assign too many values to a variable during a namelist READ statement.o MESSAGE: Undefined exponentiationNUMBER: 82EXPLANATION: An exponentiation that is mathematicallyundefined was attempted, for example, 0.**0. The result returned for floating-point operations was the reservedoperand, -0, and for integer operations, zero.o MESSAGE: Unformatted I/O to unit open for formatted transfers NUMBER: 256EXPLANATION: Attempted unformatted I/O to a unit where theOPEN statement indicated the file was formatted (FORM keyword). Check that the correct unit (file) was specified.If the FORM keyword was not specified in the OPEN statement andthe file should contain unformatted data, specifyFORM='UNFORMATTED' in the OPEN statement. Otherwise, ifappropriate, use formatted I/O (such as list-directed ornamelist I/O).o MESSAGE: Unit already openNUMBER: 34EXPLANATION: A DEFINE FILE statement specified a logical unitthat was already opened.o MESSAGE: Unit not connectedNUMBER: 11EXPLANATION: The specified unit was not open at the time ofthe attempted I/O operation. Check if correct unit number was specified. If appropriate, use an OPEN statement to explicitly open the file (associates the file with the unit number).o MESSAGE: User breakpoint (SIGTRAP)EXPLANATION: Break exception generated a SIGTRAP signal(described in signal(3)). Core dump file created.Examine core dump for possible cause.o MESSAGE: User single step (SIGTRAP)NUMBER: 135EXPLANATION: Break exception generated a SIGTRAP signal(described in signal(3)). Core dump file created.Examine core dump for possible cause.o MESSAGE: Variable format expression value errorNUMBER: 68EXPLANATION: The value of a variable format expression was notwithin the range acceptable for its intended use; for example, a field width was less than or equal to zero. A value of 1 was assumed, except for a P edit descriptor, for which a value of zero was assumed.o MESSAGE: Write to READONLY fileNUMBER: 47EXPLANATION: A write operation was attempted to a file thatwas declared READONLY in the OPEN statement that is currently in effect.o MESSAGE: Wrong number of argumentsEXPLANATION: An improper number of arguments was used to calla math library procedure.Error_MessagesShould be corrected. The program may continue execution, but the output from this execution may be incorrect.The error messages follow (in alphabetical order):o MESSAGE: Floating divide by zeroNUMBER: 73EXPLANATION: During a floating-point arithmetic operation, anattempt was made to divide by zero.o MESSAGE: Floating invalidNUMBER: 65EXPLANATION: During an arithmetic operation, thefloating-point value generated resulted in an invalid format (not representable for that data type).o MESSAGE: Floating overflowNUMBER: 72EXPLANATION: During an arithmetic operation, a floating-pointvalue exceeded the largest representable value for that data type. See your DEC Fortran user manual for ranges of thevarious data types.o MESSAGE: Floating point exceptionNUMBER: 75EXPLANATION: A floating-point exception occurred. Core dumpfile created. Possible causes include divide by zero,overflow, or an invalid operation, such as subtraction ofinfinite values, multiplication of zero by infinity (withoutsigns), division of zero by zero or infinity by infinity, and conversion of floating-point to fixed-point format when anoverflow prevents conversion.o MESSAGE: Floating underflowNUMBER: 74EXPLANATION: During an arithmetic operation, a floating-pointvalue became less than the smallest representable value forthat data type. On RISC systems (depending on the values ofthe f77 command -fpe option), the underflowed result was either set to zero or allowed to gradually underflow. On AXP systems, the underflowed result is set to zero. See your DEC Fortranuser manual for ranges of the various data types.o MESSAGE: Fortran abort routine calledNUMBER: 266EXPLANATION: The program called abort to terminate theprogram.o MESSAGE: IOT trap signalNUMBER: 76EXPLANATION: Core dump file created. Examine core dump forpossible cause of this IOT signal.o MESSAGE: Output conversion errorNUMBER: 63EXPLANATION: During a formatted output operation, the value ofa particular number could not be output in the specified field length without loss of significant digits. When this situation is encountered, the field is filled with asterisks.o MESSAGE: Process interrupted (SIGINT)NUMBER: 69EXPLANATION: The process received the signal SIGINT.Determine source of this interrupt signal (described insignal(3)).o MESSAGE: Process killed (SIGTERM)NUMBER: 78EXPLANATION: The process received the signal SIGTERM.Determine source of this software termination signal (described in signal(3)).o MESSAGE: Process quit (SIGQUIT)NUMBER: 79EXPLANATION: The process received the signal SIGQUIT. Coredump file created. Determine source of this quit signal(described in signal(3)).Warning_MessagesShould be investigated. The program continues execution, but the output from this execution may be incorrect.The warning messages follow (in alphabetical order):o MESSAGE: Could not open message catalog: formsg.cat NUMBER: noneEXPLANATION: The DEC Fortran message file was not found onthis system. See your DEC Fortran user manual for moreinformation.Informational_MessagesFor informational purposes only. Unless it accompanies anothermessage, the program continues.The informational messages follow (in alphabetical order):o MESSAGE: Check environment variable NLSPATH and protection of path-name/for_msg.datNUMBER: noneEXPLANATION: The DEC Fortran message file was not found onthis system. For more information, see your DEC Fortran user manual or your DEC Fortran installation guide.o MESSAGE: Check location/protection of NLS and/usr/lib/formsg.datNUMBER: noneEXPLANATION: The DEC Fortran message file was not found onthis system. See your DEC Fortran user manual for moreinformation.o MESSAGE: nn floating divide-by-zero trapsNUMBER: 299EXPLANATION: The total number of floating-point divide-by-zero traps encountered during program execution was nn. This summary message appears at program completion.o MESSAGE: nn floating invalid trapsNUMBER: 297EXPLANATION: The total number of floating-point invalid data traps encountered during program execution was nn. This summary message appears at program completion.o MESSAGE: nn floating overflow trapsNUMBER: 298EXPLANATION: The total number of floating-point overflow traps encountered during program execution was nn. This summary message appears at program completion.o MESSAGE: Floating-point conversion failedNUMBER: 95EXPLANATION: The attempted unformatted read or write ofnon-native floating-point data failed. A non-nativefloating-point value either exceeded the allowable maximumvalue for the equivalent native format and was set equal toinvalid, or the value was infinity (plus or minus), not anumber (NaN), or otherwise invalid and was set to invalid.Very small numbers are set to zero (0). This could be caused by the specified non-native floating-point format not matching the floating-point format found in the specified file.Make sure the correct file was specified. Make sure the recordlayout matches the format DEC Fortran is expecting. Check that the correct non-native floating-point data format wasspecified, as described in your DEC Fortran user manual.o MESSAGE: nn floating underflow trapsNUMBER: 300EXPLANATION: The total number of floating-point underflowtraps encountered during program execution was nn. Thissummary message appears at program completion.o MESSAGE: Format syntax error at or near xxNUMBER: 58EXPLANATION: Check the statement containing xx, a charactersubstring from the format string, for a format syntax error.For information about FORMAT statements, refer to the "DECFortran Language Reference Manual".o MESSAGE: Fortran error message number is nnnNUMBER: noneEXPLANATION: The DEC Fortran message file was not found onthis system. For information about the message file location and the error text that corresponds to the listed error number, nnn, see your DEC Fortran user manual.。
fortran90常见错误
1、运行fortran时出现forrt1:severe<59>:list-directed I/O syntax error,unit 1,file G:\1\1\meat.dat怎么办这是通道1 ，链接到文件meat.dat 的读写出错了。
这问题你得认真检查类似read( 1 , * ) 或write( 1 , * ) 这样的语句，错误原因挺多的。
比如二进制文件用了文本方式读取，比如变量列表与文件不匹配。
问：另外forrt1:severe<161>:program exception -array bounds exceeded是怎么回事？回答：数组越界，也是很常见的错误。
比如real a(100)如果你使用了a(101) 就会越界，因为a 数组只有100 个元素。
2、fortran运行提示error M6201：math-**，现将代码贴出，求高手帮忙看看，急求解答！我不能确定你的错误是怎么引起的。
可能咱们的编译器不同。
你的代码在我这里的问题是：虚参和实参精度不同。
在程序中，你定义了部分real*8，但是对应的虚参和返回值却定义为real。
比如主程序里的z1（双精度），传入函数g里面的x却定义为单精度。
主程序Do 死循环了。
z2_jiashe和z2_suan每一次循环都没有发生改变，于是永远跳不出循环。
我给你的建议是：同一个程序，统一使用real*8 或real*4，尽量不要混用，除非你很自信能理清他们的关系。
检查Do 循环，尤其是z2_jiashe 和z2_suan，是否应该每次循环不同？fortran_排除错误(2012-04-20 23:22:44)安装好VISUAL FORTRAN后1、运行Developer studio即可开始编译FORTRAN程序2、选择File菜单中的New选项3、在弹出的对话框选择projects标签，其他标签不用管，projects格式选用Fortran console application；在project name里命名（最好英文名），点击“ok ”4、接下来画面中，选择“an empty project”，点击“finish”5、接下来画面点击“ok”6、再选择一次File菜单中的new7、对话框选用files标签，选择Fortran free format source file ，并在file里命名8、点击“ok”数Source Files 放源文件(.c、.cpp)程序的实现代码全放在这里Header Files 放头文件(.h)声明放在这里Resource Files 资源文件(.rc)放图标、图片、菜单、文字之类的，主要用来做界面的东东一般都放这里External Dependencies 除上三种以外的，程序编译时用到的文件全放这里fortran内部函数出错信息解释内部函数出错信息解释[sourcefile(line)]run-time error M62××MATH错误号函数级数学错误信息M6201 functionnames:DOMAIN error函数的自变量超出了约定的取值域，例如sqrt(-1)M6202 functionname:SING error无意义的变量。
fortran90常见错误
fortran90常见错误1、运行fortran时出现forrt1:severe<59>:list-directed I/O syntax error,unit 1,file G:\1\1\meat.dat怎么办这是通道1 ，链接到文件meat.dat 的读写出错了。
这问题你得认真检查类似read( 1 , * ) 或write( 1 , * ) 这样的语句，错误原因挺多的。
比如二进制文件用了文本方式读取，比如变量列表与文件不匹配。
问：另外forrt1:severe<161>:program exception -array bounds exceeded是怎么回事？回答：数组越界，也是很常见的错误。
比如real a(100)如果你使用了a(101) 就会越界，因为a 数组只有100 个元素。
2、fortran运行提示error M6201：math-**，现将代码贴出，求高手帮忙看看，急求解答！我不能确定你的错误是怎么引起的。
可能咱们的编译器不同。
你的代码在我这里的问题是：虚参和实参精度不同。
在程序中，你定义了部分real*8，但是对应的虚参和返回值却定义为real。
比如主程序里的z1（双精度），传入函数g里面的x却定义为单精度。
主程序Do 死循环了。
z2_jiashe 和 z2_suan 每一次循环都没有发生改变，于是永远跳不出循环。
我给你的建议是：同一个程序，统一使用real*8 或real*4，尽量不要混用，除非你很自信能理清他们的关系。
检查Do 循环，尤其是z2_jiashe 和z2_suan，是否应该每次循环不同？fortran_排除错误(2012-04-20 23:22:44)安装好VISUAL FORTRAN后1、运行Developer studio即可开始编译FORTRAN程序2、选择File菜单中的New选项3、在弹出的对话框选择projects标签，其他标签不用管，projects格式选用Fortran console application；在project name 里命名（最好英文名），点击“ok ”4、接下来画面中，选择“an empty project”，点击“finish”5、接下来画面点击“ok”6、再选择一次File菜单中的new7、对话框选用files标签，选择Fortran free format source file ，并在file里命名8、点击“ok”数Source Files 放源文件(.c、.cpp)程序的实现代码全放在这里Header Files 放头文件(.h)声明放在这里Resource Files 资源文件(.rc)放图标、图片、菜单、文字之类的，主要用来做界面的东东一般都放这里External Dependencies 除上三种以外的，程序编译时用到的文件全放这里fortran内部函数出错信息解释内部函数出错信息解释[sourcefile(line)]run-time error M62××MATH错误号函数级数学错误信息M6201 functionnames:DOMAIN error函数的自变量超出了约定的取值域，例如sqrt(-1)M6202 functionname:SING error无意义的变量。
Fortran编译器常见错误提示及原因
附录：常见错误提示及原因安装1．关于Fortran编译器的安装和配置？在安装FEPG之前一般要先安装好Powerstation Fortran 4.0编译器，并设置好Fortran编译器的path、lib和include路径。
如果你的Powerstation Fortran 4.0编译器安装在目录C:\MSDEV下，设置如下：·在WIN 2000/XP下的设置:a.鼠标移到我的电脑图标，单击右键，然后点击属性；b.点击高级属性；c.点击环境变量，进行系统变量设置；系统变量如下图：d. 如果图上的include、lib、path几个变量没有，请点击新建；如有，点击编辑；按下面变量值进行修改：变量：path值：c:\MSDEV\bin; %path%变量：lib 值：c:\MSDEV\lib;%lib%变量：include值：c:\MSDEV\include;%include%注意：如果path、lib和include变量中有相应新增加的内容，可不增加。
如果编译器装在其它目录，则把C:\MSDEV换为该目录名。
实际上，在安装Powerstation Fortran 4.0时，会出现一个对话框，询问是否增加环境变量，如果选是，这些变量就已经配置好了。
安装fepg，需要用户有管理员权限。
2．运行FEPG命令生成Fortran源程序时，出现fl32不是内部命令也不是外部命令的错误(或fl32 is not internal command)？没配置好Fortran编译器的path路径。
按照上面第1个问题中的解答配置好path路径。
3. 运行FEPG命令生成Fortran源程序时，有些fortran源程序没连接成可执行程序，出现不能发现fepg.lib库文件的错误？安装FEPG之前，没安装和配置好Fortran编译器所致。
在安装FEPG之后出现此情况，可先按照上面第1个问题中的解答配置好Fortran编译器，然后在dos窗口下，运行FEPG所在目录下nfe.r8目录下的gfepglib.bat程序，即可生成fepg.lib库文件。
fortran常见错误及其原因
常见fortran错误1. Incrementally linked image--PC correlation disabled.！编译终止2. forrtl: severe (157): Program Exception - access violation！The program tried to read from or write to a virtual address for which it does not have the appropriate access. Try recompiling with the /check:bounds and /warn:argument_checking options set, to see if the problem is an out-of-bounds memory reference or a argument mismatch that causes data to be treated as an address.Other causes of this error include:Mismatches in C vs. STDCALL calling mechanisms, causing the stack to become corrupted References to unallocated pointers Attempting to access a protected (for example, read-only) address3 "forrtl: severe (64): input conversion error, unit 2, file D:\FORTRAN2\testi！文件testi正在读写，直到读写到2时错误。
举例：程序想读写整数，却碰到变量故终止。
4 error LNKZOOI : unresolved external symbol _ SN @ 4 fatal error LNKllZO : 1 unresolved externals! 出现了未指定的外部函数符号Sn 。
intel fortran新手入门常遇到的问题
安装简单地说一下，安装intelfortran之前，需提前安装visual studio 2008 2010 2012版本中的一个。
Intel fortran启动，程序中点击visual studio图标
然后是点击菜单栏上的文件—新建—项目，新建一个项目。
新建项目后，会在左侧栏里出现如下内容
如果没有出现上面的内容，请在下方，点击选项卡“解决方案资源管理器”
选中source files
接下来，有的同学会直接点文件，新建文件。
这样的选择不对，会出现“无法启动程序......系统无法找到指定的路径”这样的提示
正确的做法应该是点击项目—添加新项，然后添加free或者format格式
左侧栏会出现一个脚本文件
现在一切OK
开始写第一个程序
你会发现dos黑窗口一闪没了，怎么办？
不要紧你只要在程序后面加read(*,*)就可以了
最后成功显示。
fortran read error 处理 -回复
fortran read error 处理-回复如何使用Anki创建常用单词卡片。
第一步：理解Anki和其优点在开始之前，我们需要了解Anki是什么以及它的优点。
Anki是一款强大的记忆辅助软件，它使用间隔重复算法来帮助用户有效地记忆信息。
使用Anki创建常用单词卡片能够帮助我们扩展词汇量，提升语言技能。
Anki的优点有以下几点：1. 自适应学习：Anki根据用户的学习状态和记忆曲线来调整卡片的出现频率，使学习更高效。
2. 多平台支持：Anki可以在各种操作系统和设备上运行，包括Windows、Mac、Linux、iOS和Android。
3. 可定制性：Anki可以按照用户的需求进行定制，例如添加图片、音频和视频等。
4. 社区资源丰富：Anki拥有活跃的用户社区，可以分享和下载其他用户创建的卡片组。
第二步：准备工作在创建常用单词卡片之前，我们需要准备工作。
首先，我们需要下载并安装Anki软件。
Anki有一个官方网站，可以在上面找到各个平台的安装包。
安装完成后，打开Anki软件并注册一个账号。
第三步：创建一个新的卡片组在Anki中，卡片组是卡片的集合。
创建一个新的卡片组可以帮助我们更好地管理和组织单词卡片。
点击Anki软件中的“文件”->“新建”或者使用快捷键“Ctrl+N”来创建一个新的卡片组。
在弹出的窗口中输入卡片组的名称，例如“常用单词”，点击“确定”按钮创建新的卡片组。
第四步：添加一个新的卡片类型在Anki中，卡片类型定义了卡片的格式。
通常，我们会创建一个基本卡片类型，用于添加新的单词和其对应的释义。
在刚刚创建的卡片组中，点击“工具”->“管理笔记类型”，在弹出的窗口中点击“添加”按钮创建一个新的卡片类型。
输入卡片类型的名称，例如“基本”，点击“确定”按钮创建新的卡片类型。
第五步：设计卡片的模板在Anki中，卡片模板定义了卡片的布局和显示方式。
我们需要设计一个适合我们的常用单词卡片的模板。
fortran内部函数出错信息解释和常见运行错误
fortran内部函数出错信息解释和常见运⾏错误fortran内部函数出错信息解释内部函数出错信息解释[sourcefile(line)]run-time error M62××MATH错误号函数级数学错误信息M6201 functionnames:DOMAIN error函数的⾃变量超出了约定的取值域，例如sqrt(-1)M6202 functionname:SING error⽆意义的变量。
例如log10(0)M6203 functionname:OVERFLOW error函数的结果值或其中⼀个既时计算值太⼤以致不能表⽰，例如EXP(250000.0)M6204 functionname:UNDERFLOW error函数的结果值或其中⼀个既时计算值太⼩以致不能表⽰。
M6205 functionname：TLOSS error完全丢失精度，例如COS(1E30)M6206 functionname:PLOSS errorfortran debug模式设置和技巧CVF中有两种编译（连接、执⾏）模式：release模式和debug模式。
调试程序时，宜⽤debug模式；调好后再⽤release模式，得到⾼效的执⾏程序。
设定debug模式：点击菜单Build/Set Active Project Configuration，选 *- Win32 Debug，OK，即设定为debug模式。
以debug模式执⾏：点击“Go (F5)”按钮，或直接按F5键，则执⾏程序，并在第⼀个出错语句处停⽌，在该语句前有⼀个⼩黄⾊箭头。
若程序没错，则⼀直执⾏完毕，⾃动关闭dos窗⼝。
此时，宜⽤“！”按钮或“Ctrl+F5”键，执⾏完成后，dos窗⼝等待⽤户关闭。
设置断点：若希望执⾏时在某⼀语句处暂停，可将光标置于该语句，点击“⼿”形状的按钮，或按F9键，则程序执⾏到该语句时停在该语句处。
单步执⾏：F10（不进⼊⼦过程程序段）或者F11（遇到⼦过程进⼊⼦过程程序段继续单步执⾏）。
Fortran FAQ
1.1 FAQ之常见错误本文从编译错误，链接错误，运行时错误，计算结果错误等四个方面介绍了常见的错误及解决思路。
适合初学者阅读。
首先应该明确：错误有哪几种？我们当前遇到的是何种错误？阐述这些问题前，我们先讨论一下常规的应用程序开发的过程：1>>编写代码，使用一个或多个源代码文件。
2>>对第一步的每一个源代码文件执行编译操作。
得到一个或若干个目标代码。
3>>将目标代码，运行时库（Run-time Library）和其他使用到的函数库链接起来。
得到一个可执行文件（EXE 或其他）4>>编写程序的说明书，必要的（输入）数据文件5>>将上述得到的结果发布给用户。
（发布的方式可以是刻录成光盘，销售，放在网站上供别人下载，或者其他）6>>用户得到程序后，运行，输入数据，得到计算结果。
对于很多Fortran 程序员来说，可能用户就是自己，也可能仅仅是自己教研室的同事同学。
所以第4，5，6步骤很多时候不明显。
而如果使用集成开发环境（IDE）进行开发，第1，2，3步骤又可以一键完成。
因此，很多初学者就认为，写程序就是：输入代码，运行，得到结果。
这样的理解太狭义。
不管我们面对什么使用者来写代码，程序开发应该是上述的过程。
我们的编译器，编译环境，也是为这个过程而设计的。
于是，我们将错误分为四种：一. 编译错误（发生在第2步）编译错误，一般是源代码书写格式不正确，不符合语法要求。
二. 链接错误（发生在第3步）链接错误，一般是源代码结构不完整，运行时库或函数库使用不合理。
三. 运行时错误（发生在第6步）运行时错误，一般是执行代码时，遇到了事先未料及的错误。
比如内存不足了，磁盘空间不够了，输入文件格式不对了，输出文件写入失败了等等。
四. 计算结果不符合预期（程序代码不规范，或不符合你的设想）计算结果不符合预期，可能性就很多了。
语法与你的想法不一致，超出函数库的适用范围，执行流程控制不当等等。