...

main2.cpp

@@ -17,6 +17,9 @@ int main()
 
     cerr << "Enter number count: ";
     cin >> number_count;
+    cout << "A + B = " << a + b << '\n'
+     << "A - B = " << a - b << '\n';
+
 
     cerr << "Enter numbers: ";
 

project.cbp

@@ -107,3 +107,4 @@ int main()
     }
 
     return 0;
+}