Question

If I have an array created like this:

MyType *array = new MyType[10];

And I want to overwrite one of the elements, do I have to delete first the old element like this:

delete &array[5];
array[5] = *(new MyType());

Or is this completely wrong and do I have to work with something like “pointers to pointers” to fix this job? If so, how please….

Thanks

Answer 1

It’s an array of values, not of pointers. So you’d just do

array[5] = MyType();

This requires MyType to support the assignment operator.

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Incidentally, there’s rarely a need for manual array allocation like this in C++. Do away with the new and delete and use std::vector instead:

std::vector<MyType> array(10);
array[5] = MyType();

Note, there’s no need to delete anything.