22. 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 newVal = 0;
    int index = 0;
    for (int i = 0; i < 32; i++) {
        if ( i % 2 == 0) {
            newVal |= (reg & (1 << i)) >> index;
            index++;
        }
    }
    return newVal;
}

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