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

int f(const int t[], uint len, int x) {
    uint i = 0;
    while (i < len) {
        if (t[i] == x) {
            return i;
        }
        i++;
    }
    return -1;
}

int main() {
    int t[3] = {3, 6, 7};
    printf("emplacement de 6 : %d\n", f(t, 3, 6));
    printf("emplacement de 4 : %d\n", f(t, 3, 4));
}