C++(씨쁠쁠)(cplusplus)-백준(baekjoon)(BaekJoon)코딩 2588번:곱셈 답

#include <iostream>
using namespace std;
int main() {
    int a, b, num3, num4, num5;
    cin >> a >> b;
    num3 = (b- (b / 100)*100-((b - ((b / 100) * 100)) / 10 * 10))*a;
    num4 = (b - ((b / 100) * 100)) / 10*a;
    num5 = (b / 100) * a ;
    cout << num3 <<'\n';
    cout << num4 << '\n';
    cout << num5 << '\n';
    cout << num3 + num4*10 + num5*100 << '\n';
}