CS 456 - Systems Programming Spring 2024

Displaying ./code/feb08/fork3.c

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

int main(int argc, char **argv){
	
    pid_t id = fork();

    if (id == -1) exit(1); // fork failed 
    
    if (id > 0)
    { 
       printf("I am the parent: pid = %d \n", id);
    // I'm the original parent and 
    // I just created a child process with id 'id'
    // Use waitpid to wait for the child to finish
    } else { // returned zero
    // I must be the newly made child process
        printf("I am the child: pid = %d \n", id);
    }

  return 0;

}