c++ stack code

// stack.h: header file
class Stack {
int MaxStack;
int EmptyStack;
int top;
char* items;
public:
Stack(int);
~Stack();
void push(char);
char pop();
int empty();
int full();
};
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// stack.cpp: stack functions
#include "stack.h"

Stack::Stack(int size) {
MaxStack = size;
EmptyStack = -1;
top = EmptyStack;
items = new char[MaxStack];
}

Stack::~Stack() {delete[] items;}

void Stack::push(char c) {
items[++top] = c;
}

char Stack::pop() {
return items[top--];
}

int Stack::full() {
return top + 1 == MaxStack;
}

int Stack::empty() {
return top == EmptyStack;
}