test.c

#include <stdio.h>
#include <stdint.h>

static inline void print_nums(const uint8_t *u8)
{
    for (int i = 0; i < 5; ++i) {
        printf(" %d", u8[i]);
    }
    putchar('\n');
}

void move_zeroes_last(uint8_t *u8) {
    int iters = 0;
    for (int i = 0; i < 5; ++i) {
        if (u8[i] == 0) {
            for (int q = i + 1; q < 5; ++q) {
                iters += 1;
                if (u8[q] != 0) {
                    int s = u8[q];
                    u8[q] = u8[i];
                    u8[i] = s;
                    break;
                }
            }
        }
    }

    printf("Iterations: %d\n", iters);
}

int fib(int n) {
    if (n <= 2) {
        return 1;
    }

    return fib(n - 1) + fib(n - 2);
}