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
    uint16_t e_reg = 0;
    uint8_t intermediate = 0;
    for(uint8_t i=0; i <16; i++)
    {
        intermediate = (reg >> (30 - 2*i)) & 0x1;
        e_reg |= intermediate;
        if(i==15)
            break;
        e_reg = e_reg << 1;
    }
    return e_reg;
}

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