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 res = 0x0;
    uint8_t i = 0, j = 0;
    while( i < 32 && j < 32)
     
    {
        uint8_t bit = (reg >> i) & 1;
        res |= (bit << j);
        i+=2;
        j++;
    }
    return res;
}

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

Solving Approach