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 m = 0, pos = 0;
    for(uint8_t i = 0; i< 32;i+=2)
    {
        if((reg & (1 << i)))
        {
            m |=(1 << pos);
        }
        pos++;
    }
    return m;
}
int main() {
    uint32_t reg;
    scanf("%u", &reg);
    printf("%u", extract_even_bits(reg));
    return 0;
}