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

void print_bits(uint8_t byte, char* label) {
    for(int i = 0; i < 8; i++) {
        printf("%d",((byte >> (7 - i)) & 1));
    }
    printf("  # %s\n", label);
}

int main(int argc, char* argv[]) {
    uint8_t n1 = 0xff;  // 11111111₂
    print_bits(n1, "n1");

    
    uint8_t n2 = n1 << 1;
    print_bits(n2, "n2");
    printf("n2 == 0x%02x\n", n2);
    // %02x means int in hex notation, >=2 digits, 0-padded
    
    uint8_t n3 = n2 >> 1;
    print_bits(n3, "n3");
    printf("n3 == 0x%02x\n", n3);
    
    // Set the most signficant (leftmost) bit to zero using << and >>.
    uint8_t n9 = (n1 << 2) >> 2;  // BUG
    print_bits(n9, "n2");
    
    return EXIT_SUCCESS;
}
/* vim: set tabstop=4 shiftwidth=4 fileencoding=utf-8 noexpandtab: */