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

//pipe
//fork
//execve

int main(void){
    FILE * fd = popen("wc", "w"); //writing to the pipe
    fprintf(fd,"0123456789\n");  
    fprintf(fd,"aksdflaksdf\n");
    fclose(fd);
    return 0;
}