Extract Even Bits Only from 32-bit Register

Code

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

uint32_t extract_even_bits(uint32_t reg) {
    uint16_t res = 0x0000;
    for(int i=0;i<32;i++)
    {
        if(i%2 == 0)
        {
           res = res + ((reg & (1<<i))>>(i/2));
        }
    }
    return res;
}

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

Solving Approach