263. Ugly Number.cpp

class Solution {
public:
    bool isUgly(int num) {

        if(!num)
            return false;

        while(num % 2 == 0) {
            num = num/2;
        }

        while(num % 3 == 0) {
            num = num/3;
        }

        while(num % 5 == 0) {
            num = num/5;
        }

        return num == 1;

    }
};