Extract Even Bits Only from 32-bit Register

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

uint32_t extract_even_bits(uint32_t reg) {
    // Your code here
    uint32_t mask=0,i=0,j=0;
    
    for(i=0;i<32;i=i+2,j++)
    {
        mask |= ((reg&(1<<i))>>j);
    }
    

    return mask;
}

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

Solving Approach