#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <assert.h>
#include <stdint.h>   // included for uint8_t

void print_bits(uint8_t byte) {
    for(int i = 0; i < 8; i++) {
        printf("%d",((byte >> (7 - i)) & 1));
    }
}

int main(int argc, char* argv[]) {
    uint8_t byte = 0x00;  //  uint8_t is guaranteed to be unsigned and  8 bits (1 bytes)
                          // uint64_t is guaranteed to be unsigned and 64 bits (8 bytes)
                          //   int8_t is guaranteed to be   signed and  8 bits (1 byte)
    
    byte = 0x01 << 2;
    assert(byte == 0x04);
    printf("byte == 0x%02x\n", byte);
    //      byte ==  ... obviously
    //              0x ... because unlike mintf(…), printf(…) does not add the 0x prefix for hex
    //                %02x  ... because %x would be just hex notation
    //                          %2x would be hex notation, taking >= 2 positions, spaces on left
    //                          %02x is the same but padding with zeros not spaces on left
    //

    print_bits(byte);
    return EXIT_SUCCESS;
}
/* vim: set tabstop=4 shiftwidth=4 fileencoding=utf-8 noexpandtab: */