22. Extract Even Bits Only from 32-bit Register

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

uint32_t extract_even_bits(uint32_t reg) {
    int i=0;
    uint32_t res;
    for (int count = 0; count < 32; count ++){
        if (count % 2 == 0) {
            res += ((reg >> count) & 1U) << i;
            i++;
        }
    }
    return res;
    
}

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