first commit

main.cpp

@@ -7,4 +7,7 @@ int main()
  cout << "Enter A and B: ";
     int a, b;
     cin >> a >> b;
+     cout << "A + B = " << a + b << '\n'
+    << "A - B = " << a - b << '\n'
+    << "A * B = " << a * b << '\n'
 }