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



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