Better way for memory sanitization in C++ to void data leakage? -

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While working in "C", I am using hygiene techniques to avoid data leakages directed by CITT:

memset (mem_name, '\ 0', mem_size);
  1. What does delete do in C ++ ?
  2. If not, then delete () What is the best way to do this in C ++ , div>

    1. delete (), it Automatically in C ++?

      no

      1. If not, what is the better way to do it in C ++ using the delete ()?

        In general it would be wrong in C ++: 

          foo * p = new fu (); Memeset (p, 0, saiff (fo)); Remove p;   
         The problem is that the  delete p  will call the destroyer of the class, and if the destroyer is non-trivial then he may need to reach members of class Free related resources, but those members have been overwritten by  memset .  
         The equivalent destructor must explicitly invite, call  , then use  delete operator to clear the memory :  
          foo * p = new Foo (); P-> ~ Foo (); Memeset (p, 0, saiff (fo)); :: Remove operator (P);   
          But  the compiler is allowed to optimize the memset, if it can see that no one uses the memory again, so the CERT Advice is very much Not good.

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