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 res=0;
    int bit_index=0;
    for(int i=0; i< 32; i+=2){
        uint32_t bit=  (reg >> i) & 1U ;
        res|= (bit<<bit_index);
        bit_index++;
    }
        return res;
}

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