#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>

int main()
{

        pid_t pid = fork();

        printf("Mit If:\t\t");
        // Fehlerbehandlung für Fork
        if (pid < 0) { printf("Error, wrong PID\n"); }
        // Im Vaterprozess:
        else if (pid > 0) { printf("[PID: %i] father\n", getpid()); }
        // Im Kindprozess:
        else { printf("[PID: %i] child\n", getpid()); }

        printf("Mit Switch:\t");

        switch (pid)
        {
                case 0: printf("[PID: %i] child\n", getpid());
                        break;
                case -1: printf("Error, wrong PID\n");
                        break;
                default: printf("[PID: %i] father\n", getpid());
                        break;
        }

        return 0;
}