Extract Even Bits Only from 32-bit Register

Code

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

uint32_t extract_even_bits(uint32_t reg) {
    // Your code here
    uint32_t result = 0;
    int index = 0;

    for (int i= 0 ; i < 32 ; i+=2)
    {
        if (reg & (1 << i))
        {
           result |=   (1 << index);
           
        }
       
        index ++ ;

    }
    return result;
}

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

Solving Approach