fork1.c

#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>

int main(int argc, char** argv){
  fork(); 
  /* The function getpid() returns the PID of the current process */ 
  fprintf(stdout, "I'm a process, my PID is: %d", getpid()); 

  return EXIT_SUCCESS;
}