stack using array

DocCeaser (43)
Can someone please help me figure out why this outputs nothing when I run this program? The only thing on the screen is "press any key to continue" and once I press a key it crashes.
.cpp file 
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#include <iostream>
using namespace std;
#include "arrayStackType.h"

int main()
{
//   arrayStackType maxStackSize[100];
    arrayStackType stack(100);
    //arrayStackType stack2(10);
    //stack.initializeStack();
    stack.push(7);
    stack.push(12);
    stack.push(8);
    stack.top();
    //stack1.reverseStack(stack2);
    
    system("pause");
return 0;
}

.h file 
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class arrayStackType
{
      private:
              int maxStackSize;
              int stackTop;
              int list[];
      public:
             arrayStackType(int);
             bool isEmptyStack();
              bool isFullStack();
              void push(int);
              int top();
              void pop();
};
arrayStackType::arrayStackType(int stacksize)
{
     maxStackSize=stacksize;
     stackTop=0;
}
void arrayStackType::push(int n)
{
     if(!isFullStack())
     {
     list[stackTop]=n;
     stackTop++;
     }
      else
      cout<<"Stack is full"<<endl;
}
bool arrayStackType::isEmptyStack()
{
        return(stackTop==0);
}
bool arrayStackType::isFullStack()
{
      return(stackTop==maxStackSize);
}
int arrayStackType::top()
{
       if(isEmptyStack())
       cout<<"empty stack"<<endl;
       else
       return list[stackTop-1];
}
void arrayStackType::pop()
{
        if(!isEmptyStack())
        stackTop--;
        else
        cout<<"Empty Stack"<<endl;
}
Peter87 (11254)
What does this do? int list[];
DocCeaser (43)
That was supposed to be int *list. After I changed that, I ran the program and now it just crashes without showing anything.
Peter87 (11254)
You also need to point the list pointer to some valid memory that you can write to.
DocCeaser (43)
Ok thanks. I think I can handle it from here.
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