adding comment

main.cpp

@@ -5,13 +5,16 @@ using std::cin;
 using std::endl;
 
 int main(){
+  // creating inputs 
   double first, second;
 
+  // printing statements to alert the user to enter inputs
   cout<< "First number: ";
   cin>> first;
   cout<< "Second number: ";
   cin>> second;
 
+  // printing results of operations
   cout<< "Addition: "<< first << "+" << second << "=";
   cout<< (first+second) << endl;
   cout<< "Subtraction: "<< first << "-" << second << "=";
@@ -20,4 +23,4 @@ int main(){
   cout<< (first*second) << endl;
 
   return 0;
-}
+}