Question

I need a functionality of std::set for each element in an array. How can I achieve this functionality?

I started with allocating dynamic array of std set in C++ as follows:

set<int>* entry;

followed by allocation:

entry = (set<int>*)malloc(sizeof(set<int>)*32);

No compilation problem, but the runtime fails with segmentation fault when any element is accessed:

entry[0].insert(23);

Any help is highly appreciated.

Answer 1

In c++ you allocate memory with new. The difference from malloc here is that the constructor is called to initialize the memory.

entry = new set<int>[32];