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
    uint16_t newReg;

    for (int i = 0; i < 32; i = i + 2){
        if (reg & (1<<i)){
            newReg |= (1<<(i/2));
        } else if ((reg & (1<<i)) == 0){
            newReg &= ~(1<<(i/2));
        }
    }

    return newReg;
}

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