Extract Even Bits Only from 32-bit Register

Code

#include <stdio.h>
#include <stdint.h>

uint32_t extract_even_bits(uint32_t reg) {
    int ans=0;
    
    int pos=0;
    
    for(int i=0;i<32;i=i+2){
        if(reg&(1<<i)){
            ans =ans|(1<<pos);
        }
       pos++;
    }
    return ans;
}

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

Solving Approach