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

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