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 pos=0;
    for(int bit=0;bit<32;bit+=2)
    {
            if((1<<bit)&reg)
            {
                res|=(1<<pos);
            }
            pos++;

    }
    return res;
}

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