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 ret=0;
    for(int i=0;i<16;i++)
    {
        bool val = (reg>>(i*2))&1;
        ret|=(val<<i);
         
        //printf("%u\n",ret);
    }
    return ret;
}

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