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

void fils(void)
{
    int n;
    srand(getpid());
    exit(rand() % 128);
}

int main(int argc, char *argv[])
{
    int n, max, status;
    assert(argc == 2);
    n = strtol(argv[1], NULL, 0);

    for (int i = 0; i <= n; i++)
    {
        pid_t p = fork();
        assert(p != -1);

        if (p == 0)
        {
            fils();
        }
    }

    wait(&status);

    if (WIFEXITED(status))
        max = WEXITSTATUS(status);

    for (int i = 0; i <= n; i++)
    {
        wait(&status);
        if (WIFEXITED(status))
        {
            if (WEXITSTATUS(status) > max)
                max = WEXITSTATUS(status);
        }
    }

    printf("Le maximum est %d\n", max);
    exit(0);
}