I have been using a dynamic array but I had to add and remove items. I've read it's not recommended to use realloc or to resize the arrays when one can simply use std::vector however I'm having problems in changing my array to a vector.
This is my current code:
int main(){
// This is what I'm doing now
State*arr[3];
int pos = 0;
arr[0] = new Menu();
// How do I change it to a vector? This is what I'm trying:
std::vector<State> vec;
vec.push_back(Menu());
...
}
However I keep getting error: "Cannot allocate an object of abstract type 'State'" What am I doing wrong?
These are class State and Menu:
class State
{
public:
virtual ~State() {};
virtual void capture_events() = 0;
virtual void logic() = 0;
virtual void render() = 0;
};
Menu : public State
{
public:
Menu();
~Menu();
void capture_events();
void logic();
void render();
};