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
    uint8_t bit = 0;
    uint8_t index = 1;
    uint32_t reg_even = 0;
    reg_even = reg & 1;
    for(uint8_t i = 1; i < 32; i ++)
    {   
        if(i % 2 == 0)
        {
            bit = (reg >> i) & 1;
            reg_even = reg_even | (bit << index);
            index++;
        }
        
    }
    return reg_even;
}

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