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 extract_bit;
    uint32_t new_val=0;
    for(int i=30; i>=0; i=i-2){
        extract_bit = (reg & (1<<i));
        if(extract_bit & (1<<i)){
            new_val |= (1<<(i/2)); 
        }
    }
    return new_val;
    
}

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