22. Extract Even Bits Only from 32-bit Register

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

uint16_t extract_even_bits(uint32_t reg) 
{
    uint16_t temp = 0;
    uint8_t extract_bit = 0;
    
    for(uint8_t i = 0; i < 32; i += 2)
    {
        extract_bit = ((reg >> i) & 0x01);
        temp |= (extract_bit << i / 2);    
    }

    return temp;
}

int main() {
    uint32_t reg;
    scanf("%u", &reg);
    printf("%u", extract_even_bits(reg));
    return 0;
}