Thread: Command Line parameters question

I am making a program where I want the user to enter the location and name of a file and then execute that file continuisly every 30 seconds...For example c:\timer.exe c:\windows\file.exe and I want file.exe to be fp. However the program crashes..any ideas?

Code:

 
int main(int argc, char *argv[])
{
  FILE *fp;
  const int x = 10;
  fp = fopen(argv[0],NULL);

while (x > 0)
 {
     system(fp);
     sleep (30000); 
 }
  return 0;
}