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 y,i,j=0;
    for(i=0;i<32;i++)
    {
        if(i%2==0)
        {
            if(reg>>i&1)
            {
                y|=(1<<j);
            }
            else
            {
                y &=~(1<<i);
            }
            j++;
            
        }
    }
    return y;
}

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

Solving Approach