C linux

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

int main(void)
{
    int foo;

    printf("pid \t %d \n", getpid());
    printf("ppid \t %d \n", geppid());

    foo = fork();
    printf("foo = %d \n", foo);

    if(foo > 0) {
        printf("Jestem procesem maciezystym! ID = %d \n", getpid());
    }
    else {
        printf("Jestem potomkiem! ID = %d \n", getpid());
    }

    if(foo == -1) {
        printf("Blad! \n");
    }

    return EXIT_SUCCESS;
}