Extract Even Bits Only from 32-bit Register

Code

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

uint32_t extract_even_bits(uint32_t reg) {
    
    uint32_t rezultat = 0;
    int j = 0;
    for(int i = 0 ; i < 32 ; i++)
    {
        if(i % 2 == 0 )
        {
            if(reg & (1 << i))
            {
                rezultat |= (1 << j);
                j++;
            }
                
        }
            
    }

    return rezultat;
}

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

Solving Approach