Question

I’m mainly interested in the simple goal of getting a C program to

I just want to get a C program to do
c:\windows\system32\cmd.exe /k dir
or
c:\windows\system32\cmd.exe /k c:\windows\system32\cmd.exe /k dir

I found a windows C compiler.. called lcc-win32

Here is the code i’m using, at the moment just aiming at launching 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");
}

But i’m getting a lot of errors
cpp: c:\cprogs\hw2.c:1 Could not find include file
cpp: c:\cprogs\hw2.c:2 Could not find include file
and others

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

I’m hoping to just have found some example code on the net that I can amend but I can’t even get any such code to compile.

–added—

I found some example code, I figured out to make the \\ ‘cos i’ve some experience programming.

#include <stdlib.h>

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

and that seems to work.

Answer 1

You’re opening the executable file, not executing it. Check out the “system” call.