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/* system example : DIR */
#include <stdio.h>
#include <stdlib.h>

int main ()
{
  int i;
  printf ("Checking if processor is available...");
  if (system(NULL)) puts ("Ok");
    else exit (EXIT_FAILURE);
  printf ("Executing command DIR...\n");
  i=system ("dir");
  printf ("The value returned was: %d.\n",i);
  return 0;
}