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

int main (int argc, char *const argv[], char *const envp[])
{

    struct rusage stat;
    pid_t is_parent;



    int iteration = strtol(argv[1],NULL,0);

    char * commande = argv[2];




    for (int i = 0 ; i < iteration ; i++){
        system(commande);
    }

    if (getrusage(RUSAGE_CHILDREN, &stat) == -1){
        fprintf(stderr, "pb ressources : %s\n", strerror(errno));
        exit(4);
    }

    printf("user CPU time : %ld:%.5ld seconds \n", stat.ru_utime.tv_sec/iteration, stat.ru_utime.tv_usec/iteration);
    printf("system CPU time : %ld:%.5ld seconds \n", stat.ru_stime.tv_sec/iteration, stat.ru_stime.tv_usec/iteration);

    exit(0);


}
pute