Extract Even Bits Only from 32-bit Register

Code

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

uint32_t extract_even_bits(uint32_t reg) {
    // Your code here
    uint32_t maskBit = 0;
    int j = 0;

    for(int i = 0; i < sizeof(uint32_t) * 8; i += 2)
    {
        // If bit i is set, place it in the result at the next position
        if((reg >> i) & 1)
        {
            maskBit |= (1 << j);
        }
        j++;
    }

    return maskBit;
}

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

Solving Approach