Extract Even Bits Only from 32-bit Register

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

uint32_t extract_even_bits(uint32_t reg) 
{
    uint32_t value=0;
    uint32_t result=0;
    uint32_t pos =0;
    for(int i=0;i<32;i++)
    {
        if((i%2)==0)
        {
            value=(reg>>i)&1;
            result|= (value<<pos);
            pos++;
        }
        else
        {
            value=0;
        }
    }
    return result;
}

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