rstalekar

 Profile Answers by rstalekar 

• Dec 10th, 2009

 

Just fork and do a execlp for that particular file. For eg:-
File test.c
int main()
{
printf("Hin");
return 0;
}

Compile cc test.c -o test

File try.c
int main()
{
   if ((pid=fork()) == 0)
  {
      execlp("./test","./test",NULL);
  }
  else
  {
     pid = wait(&status);
   }
}

abhimanipal

 Profile Answers by abhimanipal 

• Jan 15th, 2010

 

The question here asks "how to run another progam without using a system call". I do not think it is possible to run another program without using exec.

rohitpant27

 Profile Answers by rohitpant27 

• Mar 27th, 2010

 

It can be included simply by:
include "filename"
only one file should contain the main() function.

yassiguy

 Profile Answers by yassiguy 

• May 25th, 2010

 

We can store a shell code in another file. The shell code will spawn the new program. We can invoke the shell code from the parent program by reading it into memory and typecast the starting address to a function pointer and then invoking it.