pipe.c

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

int main(void)
{
    int fds[2];

    if ( pipe(fds) < 0 ) {
        perror("pipe");
        exit(EXIT_FAILURE);
    }


    printf("fds[0]: %d\n", fds[0]);
    printf("fds[1]: %d\n", fds[1]);

    sleep(100);
    return 0;
}