Question

I have an array of strings defined like this:

char** arrNames;

Now I want to dynamically allocate a size to it.
I have a function that receives the new size and the array above.
It goes like this:

char** AddName(char** arrNames, int nNameCount)
{
    char** arrTemp;

    arrTemp = new char[nNameCount];
    ...
    // And later I change the pointer of arrNames to arrTemp
}

Now this obviously doesn’t work. So what should I be doing instead?

Thanks in advance.

Answer 1

If you want nNameCount strings, you need to allocate an array of arrays of chars (i.e an array of strings):

char** AddName(char** arrNames, int nNameCount)
{
    char** arrTemp = new char *[nNameCount];

    for (int i = 0; i < nNameCount; ++i) arrTemp[i] = new char[STRING_SIZE];
    ...
}

After this you can access each string with arrTemp[index]. Note that you still need to initialize each string.