c语言编程选课系统程序

#include
#include
#include
#include
#include
using namespace std;
class course;
class student
{public:
student(){num=0;c=0;n=0;}
string name;
string number;
int num;
course *c;

student *n;
};
class course
{public:
course(){num=0;s=0;n=0;}
string name;
string code;
int num;
student *s;

course *n;
};

void main()
{

char *c1=new char [];course *che;student *she;string st1,st21,st22;

while(true)
{
ifstream fi1("c.txt");
if(fi1)
{cout<<"读取文件中。。。\n";
fi1>>st1;
if(st1.length()!=0)
{string str1="MK2A";
course *p1=new course;
che=p1;
while(st1[0]!=0)
{p1->name=st1;
p1->code=str1;
str1[3]++;
p1->n=new course;
p1=p1->n;
fi1>>st1;
}
cout<<"文件读取成功！\n";
cout<<"代码\t\t\t\t课程\n";
p1=che;
while(p1->n)
{cout<code<<"\t\t\t\t"<name<<'\n';
p1=p1->n;
}
break;
}
else
{cout<<"读取失败！！！请在根目录下建立"<<"c.txt"<<"文本文件并写入选课信息!\n";}
}
else
{cout<<"ERROR:文件打开失败！！！！请在根目录下建立"<<"c.txt"<<"文本文件并写入选课信息!\n";}
break;}
system("cls");



while(true)
{
ifstream fi2("s.txt");
if(fi2)
{cout<<"读取文件中。。。\n";
fi2>>st21>>st22;
if(st21.length()!=0&&st22.length()!=0)
{string st20="12010rg";
student *p2=new student;
she=p2;
while(st21.length()!=0&&st22.length()!=0)
{st21=st20+st21;
p2->number=st21;
p2->name=st22;
p2->n=new student;
p2=p2->n;
fi2>>st21>>st22;
}
cout<<"文件读取成功！\n";
cout<<"学生信息如下：\n";
cout<<"编号\t\t\t\t姓名\n";
p2=she;
while(p2->n)
{cout<number<<"\t\t\t"<name<<'\n';
p2=p2->n;
}
break;
}
else
{cout<<"读取失败！！！请在根目录下建立"<<"s.txt"<<"文本文件并写入学生信息!\n";}
}
else
{cout<<"ERROR:文件打开失败！！！！请在根目录下建立"<<"s.txt"<<"文本文件并写入学生信息!\n";}
break;}
system("cls");

char *c10="color 17",*c11="color 07";
system(c10);
unsigned int i,j;
for(i=0;i<=100;i++)
{
system("cls");
cout<<"\n\n\n\n\n\n\n\n\t\t\t---=欢迎进入冰之龙学生选课系统=---\n";
if(i!=100)
{
cout<<"\t\t\t\t程序载入中";
for(j=1;j<=i%10;j++)
cout<<'.';
}
cout<<"\n\n\n\n";
if(i!=100)
{
cout<<"\t\t\t\t "<}
else
{
cout<<"\t\t\t\t "<<"完成！！！\n\n\n";
}
cout<<"\t\t\t ";
for(j=1;j<=i/10;j++)
cout<<"●";
for(j=1;j<=10-i/10;j++)
cout<<"○";

}
cout<<'\n';
system(c11);

while(true)
{cout<<"\n\n\n\n\n\t\t\t请选择您是1.老师 2.学生：0.退出 ";cin>>c1;
if(c1[0]=='1')
{

while(true)
{
cout<<" _____________________________________________\n";
cout<<" | 1.修改课程信息 2.查看选课信息 |\n";
cout<<" | 3.按课程查看选课情况 4.按学生查看选课情况|\n";
cout<<" | 5.保存文件 0.退出 |\n";
cout<<" ---------------------------------------------\n";
cout<<"请选择你要的操作：";cin>>c1;
if(c1[0]=='0')break;
if(c1[0]<'0'||c1[0]>'5'){system("cls");cout<<"输入错误！请重新输入！！！\n";continue;}
switch(c1[0])
{
case '1':
{system("cls");
cout<<"请选择是否修改课程信息（yes||no）:";
while(true)
{cin>>c1;
if(c1[0]=='y'||c1[0]=='Y'||c1[0]=='N'||c1[0]=='n')
{if(c1[0]=='y'||c1[0]=='Y')
{cout<<"请选择1.修改 2.添加 3.删除 0.退出 ：";
cin>>c1;
while(true)
{if(c1[0]=='0')break;
switch(c1[0])
{case '1':
{cout<<"请输入要修改的课程名称或代码：";
string str3;cin>>str3;
course *cp=che;bool b1=false;
while(cp->n!=0)
{if(str3==cp->code||str3==cp->name)
{b1=true;cout<<"请输入新的课程名称；";
cin>>cp->name;cout<<"修改成功！\n";
}cp=cp->n;
}
if(!b1)cout<<"没找到或输入错误！！！\n";
}break;
case '2':
{cout<<"请输入要添加的课程名称：";
string str3;cin>>str3;
course *cp=che;
while(cp->n!=0)
{ cp=cp->n;}
cp->name=str3;
cp->n=new course;
cout<<"添加成功！\n";
}break;
case '3':
{cout<<"请输入要删除的课程名称或代码：";
string str3;cin>>str3;
course *cp=che,*cp3;bool b1=false;
while(cp->n!=0)
{if(str3==cp->code||str3==cp->name)
{b1=true;
if(cp==che)che=che->n;
else
{cp3->n=cp->n;}
cout<<"删除成功！\n";break;
}cp3=cp;cp=cp->n;
}
if(!b1)cout<<"没找到或输入错误！！！\n";
}break;
default:cout<<"输入错误！请重新输入！！！\n";break;
}
cout<<"请重新选择1.修改 2.添加 3.删除 0.退出 ：";
cin>>c1;
}
break;
}
else
{break;}
}
else
{cout<<"输入错误！请重新输入！！！\n";cout<<"请选择是否修改课程信息（yes||no）:";}
}
}break;
case '2':
{ cout<<"选课信息如下：\n";
cout<<"代码\t\t\t\t课程\n";
course *p3=che;
while(p3->n)
{cout<code<<"\t\t\t\t"<name<<'\n';
p3=p3->n;
}
}break;
case '3':
{system("cls");
cout<<"选课情况如下：\n";
course *c6=che;student *s7;bool b10=1;
while(c6->n)
{if(c6->num)
{b10=0;cout<code<<'\t'<name<<" 有"<num<<"名同学选，分别是：\n";
s7=c6->s;
while(s7)
{cout<number<<'\t'<name<<'\n';s7=s7->n;}}
c6=c6->n;}
if(b10){cout<<"还没开始选课 ！！！\n";}
}break;
case '4':
{system("cls");

cout<<"请选择1.查看某位学生选课信息 2.查看全部学生选课信息: ";
while(true)
{cin>>c1;
if(c1[0]=='1'||c1[0]==

'2')
{if(c1[0]=='1')
{ cout<<"请输入参加选课学生的编号或姓名：";
string st8;cin>>st8;student *s8;bool b8;
while(true)
{s8=she;b8=false;
while(s8->n)
{if(s8->name==st8||s8->number==st8)
{b8=true;
if(s8->num==0){cout<<"该同学还没选课！！！\n";break;}
else{cout<name<<" 同学选了"<num<<"门课程，分别是：\n";
course *c8;c8=s8->c;
while(c8)
{cout<code<<'\t'<name<<'\n';c8=c8->n;}
break;}
}s8=s8->n;
}
if(!b8)cout<<"没找到或输入错误！！！\n";
cout<<"请再次输入参加选课学生的编号或姓名（或按0结束查看）：";
cin>>st8;
if(st8[0]=='0')break;
}
break;}
else
{
student *s8;bool b8;
s8=she;b8=false;
while(s8->n)
{
if(s8->num==0){s8=s8->n;continue;}
else{b8=true;cout<name<<" 同学选了"<num<<"门课程，分别是：\n";
course *c8;c8=s8->c;
while(c8)
{cout<code<<'\t'<name<<'\n';c8=c8->n;}
}s8=s8->n;
}
if(!b8){cout<<"同学们还没选课！！！\n";}
break;}
}
else
{cout<<"输入错误！请重新输入！！！\n";cout<<"请选择1.查看某位学生选课信息 2.查看全部学生选课信息: ";}
}
}break;
case '5':
{system("cls");
cout<<"\n\n\n\n\n\n\n\n\t\t保存文件中。。。\n";
FILE *fp5=fopen("选课情况.txt","w");fclose(fp5);
ofstream fi15("选课情况.txt");
course *c65=che;student *s75;bool b15=1;
while(c65->n)
{if(c65->num)
{b15=0;fi15<code<<'\t'<name<<" 有"<num<<"名同学选，分别是：\n";
s75=c65->s;
while(s75)
{fi15<number<<'\t'<name<<'\n';s75=s75->n;}}
c65=c65->n;}
if(b15){fi15<<"还没开始选课 ！！！\n";}
fi15.close();
system("cls");
cout<<"\n\n\n\n\n\n\n\n\t\t保存完成！！！\n";
system("选课情况.txt");
}break;
}
}




system("cls");continue;}
if(c1[0]=='2')
{


while(true)
{
cout<<" _______________________\n";
cout<<" | 1.查看选课信息 |\n";
cout<<" | 2.查看选课情况 |\n";
cout<<" | 3.开始选课 0.退出 |\n";
cout<<" -----------------------\n";
cout<<"请选择你要的操作：";cin>>c1;
if(c1[0]=='0')break;
if(c1[0]<'0'||c1[0]>'3'){system("cls");cout<<"输入错误！请重新输入！！！\n";continue;}
switch(c1[0])
{
case '1':
{system("cls");
cout<<"选课信息如下：\n";
cout<<"代码\t\t\t\t课程\n";
course *p3=che;
while(p3->n)
{cout<code<<"\t\t\t\t"<name<<'\n';
p3=p3->n;
}
}break;
case '2':
{system("cls");
cout<<"请输入参加选课学生的编号或姓名：";
string st8;cin>>st8;student *s8;bool b8;
while(true)
{s8=she;b8=false;
while(s8->n)
{if(s8->name==st8||s8->number==st8)
{b8=true;
if(s8->num==0){cout<<"该同学还没选课！！

！\n";break;}
else{cout<name<<" 同学选了"<num<<"门课程，分别是：\n";
course *c8;c8=s8->c;
while(c8)
{cout<code<<'\t'<name<<'\n';c8=c8->n;}
break;}
}s8=s8->n;
}
if(!b8)cout<<"没找到或输入错误！！！\n";
cout<<"请再次输入参加选课学生的编号或姓名（或按0结束查看）：";
cin>>st8;
if(st8[0]=='0')break;
}
}break;
case '3':
{system("cls");
cout<<"开始选课。。。。。。。。。。。。。\n";
cout<<"选课信息如下：\n";
cout<<"代码\t\t\t\t课程\n";
course *p3=che;
while(p3->n)
{cout<code<<"\t\t\t\t"<name<<'\n';
p3=p3->n;
}
cout<<"请输入参加选课学生的编号或姓名：";
string st5,cstr5;cin>>st5;
student *s5,*sp5;course *c5,*cp5;bool b2,b3;
while(true)
{s5=she;b2=false;
while(s5->n)
{if(s5->name==st5||s5->number==st5)
{
b2=true;
cout<name<<"同学,你好！\t请输入你选的课程的代码:";
cin>>cstr5;
while(true)
{c5=che;b3=false;
while(c5->n)
{if(c5->code==cstr5)
{b3=true;
if(s5->c!=0)
{course *c5p5=s5->c;bool b4=false;
while(c5p5)
{if(c5p5->code==cstr5){b4=true;break;}c5p5=c5p5->n;}
if(b4){cout<name<<"同学,该课你已经选择了！！！ 请重新选择。。。。\n";break;}}
if(s5->c==0)
{s5->c=new course;s5->num++;
s5->c->name=c5->name;s5->c->code=c5->code;}
else
{cp5=new course;s5->num++;cp5->n=s5->c;
cp5->name=c5->name;cp5->code=c5->code;
s5->c=cp5;}
if(c5->s==0)
{c5->s=new student;c5->num++;
c5->s->name=s5->name;c5->s->number=s5->number;}
else
{sp5=new student;c5->num++;sp5->n=c5->s;
sp5->name=s5->name;sp5->number=s5->number;
c5->s=sp5;}
cout<name<<"同学,选课成功！！！\n";
cout<name<<"同学,选了"<code<<'\t'<name<<'\n';

break;
}c5=c5->n;
}
if(!b3)cout<<"没找到或输入错误！！！\n";
cout<<"请再次输入你选的课程的代码（或按0结束选课）：";
cin>>cstr5;
if(cstr5[0]=='0')break;
}

break;
}
s5=s5->n;
}
if(!b2)cout<<"没找到或输入错误！！！\n";
cout<<"请再次输入参加选课学生的编号或姓名（或按0结束选课）：";
cin>>st5;
if(st5[0]=='0')break;
}
}break;
}
}




system("cls");continue;}
if(c1[0]=='0'){break;}
cout<<"输入错误！请重新输入！！！\n";
}




system("cls");
cout<<"\n\n\n\n\n\n\n\n\t\t保存文件中。。。\n";
FILE *fp5=fopen("选课情况.txt","w");fclose(fp5);
ofstream fi15("选课情况.txt");
course *c65=che;student *s75;bool b15=1;
while(c65->n)
{if(c65->num)
{b15=0;fi15<code<<'\t'<name<<" 有"<num<<"名同学选，分别是：\n";
s75=c65->s;
while(s75)
{fi15<number<<'\t'<name<<'\n';s75=s75->n;}}
c65=c65->n;}
if(b15){fi15<<"还没开始选

课 ！！！\n";}
fi15.close();
system("cls");
cout<<"\n\n\n\n\n\n\n\n\t\t保存完成！！！\n";
system("选课情况.txt");










system("cls");
cout<<"\n\n\n\n\n\n\n\n\t\t谢谢你选择使用学生选课系统1.0版！欢迎再次使用本软件。\n\n\n\n\n\t\t\t\t\t计算机系09软件工程班\n\t\t\t\t\t欢迎再次使用冰之龙学生选课系统\n\n\n\n\n\n";

}