make fields/methods more clear

cpp/classes/car.h

@@ -24,11 +24,11 @@ class car
   // define the visibility of the following fields and methods
   // in this case everything is public since visibility is a topic in future lessons
   public:
-    // define two strings, manufacturer and model
+    // define two fields, manufacturer and model
     std::string manufacturer;
     std::string model;
 
-    // define a function that will print out information
+    // define a method that will print out information
     void print_info();
 };