让c程序执行其他程序时出现问题

Question

我主要感兴趣的是一个简单的目标，即让一个C程序

我只想让一个C程序来做

c:\windows\system32\cmd.exe /k目录或c:\windows\system32\cmd.exe /k c:\windows\system32\cmd.exe /k目录

我找到了一个windows C编译器..称为lcc-win32

下面是我正在使用的代码，目前我的目标是启动cmd.exe

#include <iostream>
#include <fstream>
using namespace std;
int main(){
    ifstream inFile;
    inFile.open("c:\windows\system32\cmd.exe");
    if(!inFile){

      cout<<"Cannot open file bish."<<endl;
      system("pause");
      return 1;
      }

    system("pause");
}

但是我收到了很多错误cpp: c:\cprogs\hw2.c:1找不到包含文件cpp: c:\cprogs\hw2.c:2找不到包含文件和其他文件

Warning c:\cprogs\hw2.c: 1  no type specified. Defaulting to int
Error c:\cprogs\hw2.c: 1  Syntax error; missing semicolon before  `namespace'
Warning c:\cprogs\hw2.c: 1  no type specified. Defaulting to int
Error c:\cprogs\hw2.c: 1  Syntax error; missing semicolon before  `std'
Warning c:\cprogs\hw2.c: 1  no type specified. Defaulting to int
Error c:\cprogs\hw2.c: 3  undeclared identifier 'ifstream'
Warning c:\cprogs\hw2.c: 3  Statement has no effect
Error c:\cprogs\hw2.c: 3  Syntax error; missing semicolon before  `inFile'
Error c:\cprogs\hw2.c: 3  undeclared identifier 'inFile'
Warning c:\cprogs\hw2.c: 3  Statement has no effect
Error c:\cprogs\hw2.c: 4  left operand of . has incompatible type 'int'
Error c:\cprogs\hw2.c: 4  found 'int' expected a function
Warning c:\cprogs\hw2.c: 4  unrecognized character escape sequence '\w' (0x486bd7)
Warning c:\cprogs\hw2.c: 4  unrecognized character escape sequence '\s' (0x486bde)
Warning c:\cprogs\hw2.c: 4  unrecognized character escape sequence '\c' (0x486be6)
Warning c:\cprogs\hw2.c: 4  missing prototype
Error c:\cprogs\hw2.c: 7  undeclared identifier 'cout'
Error c:\cprogs\hw2.c: 7  operands of << have illegal types 'int' and 'pointer to char'
Error c:\cprogs\hw2.c: 7  undeclared identifier 'endl'
Warning c:\cprogs\hw2.c: 7  Statement has no effect
Warning c:\cprogs\hw2.c: 8  missing prototype for system
Warning c:\cprogs\hw2.c: 8  Missing prototype for 'system'
Warning c:\cprogs\hw2.c: 7  possible usage of endl before definition
Warning c:\cprogs\hw2.c: 7  possible usage of cout before definition
Warning c:\cprogs\hw2.c: 12  missing prototype for system
Warning c:\cprogs\hw2.c: 12  Missing prototype for 'system'
Warning c:\cprogs\hw2.c: 3  possible usage of inFile before definition
Warning c:\cprogs\hw2.c: 3  possible usage of ifstream before definition
Compilation + link time:0.0 sec, Return code: 1

我希望在网上找到一些我可以修改的示例代码，但我甚至不能得到任何这样的代码来编译。

--添加

我找到了一些示例代码，因为我有一些编程经验，所以我想要做这些。

#include <stdlib.h>

int main()
{
    system("c:\\windows\\system32\\cmd2.exe /v:on c:\\windows\\system32\\cmd2.exe /v:on");
    return 0;
}

这似乎很管用。

Answer 1

您正在打开可执行文件，而不是执行它。查看"system“调用。

Answer 2

首先，你需要转义你的斜杠字符。"\\"转换为单个反斜杠。

但从表面上看，您实际上根本不需要担心这一点。我看到您正在使用系统命令。要使用系统，根本不需要执行cmd.exe。简单地试一下

int main()
{
    system("pause");

    return 0;
}