The two Forms of ‘new’ and ‘delete’

3 07 2011

There are two forms of new and delete in C++. They are different depending on whether you are creating a single object or an array of objects. When creating a single object you use this form :

string *strPtr = new string;
delete strPtr;

For arrays you use the square bracket form of new and delete:

string *strPtr = new string[100];
delete [] strPtr;

You cannot mix and match these operations, using the single form of new with the array form of delete or vice versa is undefined.

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