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;

// Write logic here to extract bytes using union
void print_bytes(uint32_t input) {
    // Your code here

    uint8_t is_big_edian = 0;
    uint8_t len = 4;
    Register input_fields;
    input_fields.value = input;

    uint32_t val = 0x01;
    uint8_t* ptr = (uint8_t*)&val;
    if (*ptr != 0x01) is_big_edian = 1;

    if(is_big_edian) len = 3;
    else len = 0;

    for (int i = 0; i < 4; i++)    
    {
        printf("%d", input_fields.bytes[len]);
        if(is_big_edian) len--;
        else len++;
        if(len) printf(" ");
    }
}

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