68. Union Extract Bytes from a 32-bit Value

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

typedef union {
    uint32_t value;
    uint8_t bytes[4];
} Register;

void print_bytes(uint32_t input) {
    Register reg = {
        .value = input
    };

    for (uint8_t i = 0; i < sizeof(reg.value) / sizeof(uint8_t); i++) {
        printf("%u", reg.bytes[i]);

        if (i < (sizeof(reg.value) / sizeof(uint8_t)) - 1)
            printf(" ");
    }

    printf("\n");
}

int main() {
    uint32_t num;
    scanf("%u", &num);
    print_bytes(num);
    return 0;
}