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
    uint32_t mask=0;
    uint32_t pos=0;
    for (uint32_t i=0;i<=30;i=i+2)
    {
        
        uint32_t value=(reg>>i)& 1;
        // printf("%d\n", value);
        pos=(i/2);
        // printf("%d\n", pos);

        if (value==1)
            mask=mask|(1<<pos);
        


    }
    return mask;
    
    return 0;
}

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