22. Extract Even Bits Only from 32-bit Register

#include <stdio.h>
#include <stdint.h>

uint32_t extract_even_bits(uint32_t reg) {
   uint32_t mask = 0;
    uint8_t count = 0;
    for(int i = 0; i<= 31; i+=2){
        if (reg & (1 << i)){
            mask |= (1 << count);
        }
        count++;
    }



    return mask;
}

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