#include <stdio.h>
#include <sys/wait.h>
#include <unistd.h>
#define BUFSIZE 30
int main() {
        int pipe_file_descriptors[2];
        char buf[BUFSIZE];

        pipe( pipe_file_descriptors );
        
        if ( fork() == 0 ) {
                printf( " CHILD: reading from pipe\n" );
                read( pipe_file_descriptors[0], buf, BUFSIZE );
                printf( " CHILD: read \"%s\"\n", buf );
        } else {
                printf( "PARENT: writing to the pipe\n" );
                write( pipe_file_descriptors[1], "test", BUFSIZE );
                printf( "PARENT: finished writing\n" );
                wait( NULL );
        }
        return 0;
}