Question

What do you need to do to clean up an int or char (not a pointer)?

Is it necessary to clean up this type of data after use?

sample ex:

      // MAX = 100 ;
      class Simple {
              int a[ MAX ] ;
              public :
                  ~Simple ( ) ;
                  ... // some declaration to fill, initialize ...
      };

Is it essential to clean up data on the stack, e.g. the array a[ MAX ] in the example?

Answer 1

You don’t have to overwrite int or char arrays unless you really care that data store in them can be somehow used to obtain sensitive data like passwords from your program.

See this and this questions for details on when that is needed. You likely don’t need to worry about that.

But don’t confuse overwriting memory with allocating memory. If you used new to allocate an instance of your class Simple be sure to use delete to deallocate the instance at some moment, otherwise you have a memory leak.