code: add multiplication of numbers

main.cpp

@@ -8,6 +8,7 @@ int main()
     int a, b;
     cin >> a >> b;
     cout << "A + B = " << a + b << '\n'
-        << "A - B = " << a - b << '\n';
+        << "A - B = " << a - b << '\n'
+        << "A * B = " << a * b << '\n';
     return 0;
 }