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 mask=0;
    int i=0,c=0;
    while(i!=32){
        uint8_t k=(reg>>i)&1;
        mask|=(k<<c);
        c++;
        i+=2;
    }
    return mask;
    
}

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