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 res = 0;
      int k = 0;
    for(int i=0;i<=31;i=i+2)
    {
        uint32_t bit = ((reg & (1<<i)) >> i);      // extract bit
         res |= (bit << k);                        // pack into result
        k++;
       
    }
    return res;
}

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