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 = 0 , pos = 0 ;
    for(uint32_t i = 0 ; i < 32 ; i+=2){
        if((reg >> i) & 1){
            val |= (1U << pos);
            pos++;
        }
    }
    return val ;
    return 0;
}

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