Adding elements to array of structures in c++

Asked May 05 '22 at 19:21

Active May 05 '22 at 19:21

Viewed 49 times

I am currently doing a little project, and I want to add an element to a pointer of structures, and a function that does it is in struct. Can i use this to do it?

    Department* add_dep()
    {
        Department* temp;
        temp = new Department[deps_count];
        for (int i = 0; i < deps_count; i++)
        {
            temp[i] = this[i];
        }
        delete[] this;
        this = new Department[deps_count];
    }

This code gives me an error assignment to this (anachronism), and I see why, but I don't see how can I fix this without returning temp. How do I do it then?

asked May 05 '22 at 19:21

Kusachki

1

No, you cannot use `this` in this manner. Why are you using a plain `Department[]` array instead of using a `std::vector` for a dynamic array? – Remy Lebeau May 05 '22 at 19:23
1

what exactly you trying to solve? – TruthSeeker May 05 '22 at 19:23
`this` is never an array, so `delete [] this` is always wrong. `this` is a pointer to the current instance of the class. – jjramsey May 05 '22 at 19:24
PS: no return value from `add_dep` – TruthSeeker May 05 '22 at 19:26
@jjramsey ah... But what can I use instead of `this`? – Kusachki May 05 '22 at 19:26
If you have to ask that question, that suggests that you have a lot to learn about C++. I'd recommend starting here: https://stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-list – jjramsey May 05 '22 at 19:34

Adding elements to array of structures in c++

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