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 val;
    for(int i=0,j=0; i < 32; i += 2){
            if((reg >> i) & 1)
            {
                val |= (1 << j);
                j++;   
            }
              
        }
        return val;
    }

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