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_reg=0x0;
    for (uint8_t i=0 ; i<32 ; i+=2){
        res_reg|=(reg&(1<<i))>>(i/2);
    }
    return res_reg;
}

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