Question

I would like to perform the above mentioned operation, however I would like to make sure that the char array is exactly the same size with the string at hand.

So the real question is, how can I make an array with a size that is going to be determined in the run time?

Answer 1

You can create an array of size known at runtime with the “new” operator:

char* res = new char[str.size()+1];
strncpy(res, str.c_str(), str.size()+1);