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 reg1 = 0;
    int pos=0;
    for(int i=0;i<32;i++){
        if((i%2)==0){
            reg1 |= ((reg>>i) & 0x01)<<pos ;
            pos +=1; 
        }
    }
    return reg1;
}

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