#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/wait.h>

int main(int argc, int *argv[]) {
    int ptoc[2];
    pipe(ptoc);
    if (fork() == 0) {
        close(ptoc[1]);
        int i;
        while (read(ptoc[0], &i, sizeof(i)) > 0) {
            printf("Received: %d\n", i);
        };
        printf("Still confused\n");
        close(ptoc[0]);
        printf("And done!\n");
    } else {
        close(ptoc[0]);
        for (int i=1; i <= 5; i++) {
            printf("Sending %d\n", i);
            write(ptoc[1], &i, sizeof(i));
        }
        close(ptoc[1]);
    }
    exit(0);
}