2220. Minimum Bit Flips to Convert Number

class Solution {
public:
    int minBitFlips(int start, int goal) {
        int x, y, countFlip = 0;
        for (int i=0; i<32; i++) {
            x = start & (1 << i);
            y = goal & (1 << i);

            if (x != y)
                countFlip++;
        }
        return countFlip;   
    }
};