大唐电信2014C++笔试题

1. 有以下程序片段
#include <stdio.h>
int main()
{
char chArry[]= "hello";
char *pcPtr;
for(pcPtr = chArry; pcPtr < chArry+ 5; pcPtr++)
{
printf("%s\n", pcPtr);
}
return 0;
}
输出结果是( )
A. hello
B. h
C. o
D. hello
e l ello
l l llo
l e lo
o h o
2.switch(c)中的c的数据类型可以是char、long、float、unsigned、bool( )
A. 正确
B. 错误
3.int *(*ptr)(); 则以下叙述中正确的是( )
A. ptr是指向一维组数的指针变量
B. ptr是指向int型数据的指针变量
C. ptr是指向函数的指针,该函数返回一个int型数据
D. ptr是指向函数的指针,该函数的返回值是指向int型数据的指针
4.以下描述正确的是（）。

A.函数的形参在函数未调用时预分配存储空间
B.若函数的定义出现在主函数之前，则可以不必再说明
C.若一个函数没有return语句，则什么值都不返回
D.一般来说，函数的形参和实参的类型应该一致
5.下列程序的输出结果是什么（）
#include <iostream>
using namespace std;
class A
{
public:
int _a;
A()
{
_a = 1;
}
void print()
{
printf("%d ", _a);
}
};
class B : public A
{
public:
int _a;
B()
{
_a = 2;
}
};
int main()
{
B b;
b.print();
printf("%d ",b._a);
return 0;
}
A. 2 2
B. 1 1
C. 1 2
D. 2 1
6.某32位系统下, C++程序，请计算sizeof 的值. char str[] = “hello world”;
char *p = str ;
int n = 1024;
请计算
sizeof (str ) = （1）
sizeof ( p ) = （2）
sizeof ( n ) = （3）
void Test ( char str[50])
{
sizeof( str ) = （4）
}
void *p = malloc( 100 );
请计算
sizeof ( p ) = （5）
7.(1)请写出 BOOL flag 与“零值”比较的 if 语句
(2)请写出 float x 与“零值”比较的 if 语句
(3)请写出 char *p 与“零值”比较的 if 语句
8.在linux系统下，查看创建目录命令mkdir的帮助文档可以用命令
在给定文件中查找与设定条件相符字符串的命令为
更改一个文件权限的命令是
在vi编辑环境下，使用进行模式转换
9.下面代码有什么问题?
void test(char* str)
{
char string[10];
if(strlen(str)<=10)
{
strcpy(string, str);
}
}
10.下列代码是否正确，如果有错误，请改正。

class Test
{
Test(int){}
Test(){}
~Test(){}
void fun(){}
};
int main()
{
Test a(1);
a.fun();
Test b();
b.fun();
return 0;
}
11.请写出struct 和 class 的区别
12.const和#define相比，有什么不同
13.头文件中使用 ifndef/define/endif 作用是什么
14.写一个函数找出一个整数数组中，第二大的数.
15. 已知strcpy的函数原型：char *strcpy(char *strDest, const char *strSrc)其中strDest 是目的字符串，strSrc 是源字符串。

不调用C++/C 的字符串库函数，请编写函数strcpy.
16.英译汉：
The gSOAP tools minimize application adaptation efforts for building Web Services by using a XML data binding for C and C++ implemented by advanced XML schema analyzers and source-to-source code generation tools. The gSOAP wsdl2h tool imports one or more WSDLs and XML schemas and generates a gSOAP header file with familiar C/C++ syntax to define the Web service operations and the C/C++ data types. The gSOAP soapcpp2 compiler then takes this header file and generates XML serializers for the
data types (soapH.h and soapC.cpp), the client-side stubs (soapClient.cpp), and server-side skeletons (soapServer.cpp).
The gSOAP soapcpp2 compiler can also generate WSDL definitions for implementing a service from scratch, i.e. without defining a WSDL first. This "closes the loop" in that it enables Web services development from WSDL or directly from a set op C/C++ operations in a header file without the need for users to analyze Web service details. You only need to follow a few steps to execute the tools from the command line or Makefile (see also MSVC++ project examples in the samples directory with tool integration in the MSVC++ IDE). For example, to generate code for the calculator Web service, we run the wsdl2h tool from the command line on the URL of the WSDL and use option -o to specify the output file:
> wsdl2h -o calc.h /calc.wsdl
This generates the calc.h service definition header file with service operation definitions and types for the operation's data. This header file is then to be processed with soapcpp2 to generate the stub and/or skeleton code and XML serialization routines. The calc.h file includes all documentation, so you can use Doxygen () to automatically generate the documentation pages for your development.
The wsdl2h-generated service definitions header file also contains information on the use of the service, such as WS-Policy assertions when applicable.。