6. A pointer to rectangle name

• A new member variable ptr_name holds the pointer to a string of characters in memory:

  
      struct Rectangle {
          int width;  // member variable
          int height; // member variable
          char const* ptr_name;
          //...
      };//struct Rectangle
  
  

• Recall that char* pointer stores the address of the first character of the string.

• Similarly, char const* is the pointer to a constant character, telling the compiler to disallow any modifications to the characters via this pointer.

• Thus, the exact type of ptr_name is a pointer to const char -- well suitable for a string of characters allocated elsewhere, outside of the scope of the Rectangle struct