22. Extract Even Bits Only from 32-bit Register

#include <stdio.h>
#include <stdint.h>

uint32_t extract_even_bits(uint32_t reg) {
int pos = 0;
int out_pos = 0;
uint32_t temp = 0;
while (pos <= 30) {          
    temp |= ((reg >> pos) & 1) << out_pos;  
    out_pos++;
    pos = pos + 2;
} 
    return (uint16_t)temp;
    
}

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