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 val = 0;
    uint8_t pos = 0;
    for(uint8_t i =0; i<32; i+=2)
    {
        if( (reg>>i)&1)
            val |= (1<<pos);
        pos++;
    }
    return val;
}

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