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 result =0;
    int i =0;
    while(reg >= 1){
        int bit = reg % 2;
        reg/=2;
        
        if(i%2 ==  0){
            result |= (bit << (i/2));
        }
        i++;
    }
    return result;
}

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