#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <assert.h>
#include <stdint.h>

/*
 * Use typecast only when
 * ∙ safe… and you know why
 * ∙ necessary… and you know why
 */

uint8_t create_zeros_on_left(uint8_t num_zeros) {
    // WRONG
    return ~0 >> num_zeros;
    // equilent to…
    // 11111111111111111111111111111111₂ >> num_zeros;

    return ~0 >> num_zeros;
}

int main(int argc, char* argv[]) {
    
    printf("create_zeros_on_left(3) == %x\n", create_zeros_on_left(3));
    return EXIT_SUCCESS;
}
/* vim: set tabstop=4 shiftwidth=4 fileencoding=utf-8 noexpandtab: */