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 rs=0;
    uint32_t cnt=0;
    for (int i=0;i<32;i++){
        if (i%2==0){
            if ((reg>>i)&1){
            rs|=(1<<cnt);
            cnt++;
            }
        }
    }
    return rs;
}

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