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 even_bits = 0;
    uint8_t idx = 0;
    for(uint32_t i =0; i<32; i+=2){
        if((reg >> i)&1){
            even_bits |= 1 << idx;
            idx++;

        }
    }
    return even_bits;
}

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

Solving Approach