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 temp = 0;
    for (int i = 0; i < 16; i++)
    {
        temp |= (((reg >> (2 * i)) & 1) << i); //reg >> (2 * i) -> shift the 2's multiple position of register 
    }                                           //(reg >> (2 * i)) & 1) -> check whether set or not
    return temp;                                // << i -> move the old variable left and make space for new bit
}                                               //add it to current temp variable

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

Solving Approach