22. Extract Even Bits Only from 32-bit Register

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

uint32_t extract_even_bits(uint32_t reg) {
    // Your code here
    uint32_t reg_16 = 0 ; 
    uint32_t bit_mask = 1;
    uint32_t temp = 0;
    uint8_t cnt = 0;
    for(uint8_t i = 0; i < 32; i++ )
    {
        if(i % 2 == 0)
        {
            temp = reg & bit_mask;
            reg_16 |= (temp << cnt) ;
            cnt++;
        }
        reg = reg >> 1;
    }
    return reg_16;
}

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