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 new_num = 0;
    for(int i=0;i<16;i++){
        new_num += ((reg>>(2*i))&1)<<i;
    }
    return new_num;
}

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