Extract Even Bits Only from 32-bit Register

Code

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

uint16_t extract_even_bits(uint32_t reg) {
    uint16_t temp = 0;
    uint8_t pos = 0;

    for(int i = 0; i <= 30; i += 2){ 
            
        if((reg >> i) & 1){
            temp |= (1 << pos);
        }
        pos++;
    }
    return temp;
}

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

Solving Approach