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

int main() {
    pid_t fpid;
    //int count = 0;
    fpid = fork();
    
    if (fpid < 0) printf("error in fork!");
    else if (fpid == 0) {
        printf("I am child. Process id is %d\n", getpid());
    }
    else {
        printf("I am parent. Process id is %d\n", getpid());
    }

    return 0;
}