a very very simple stack..

sstack.cpp

#include <iostream>
#include <string>

using namespace std;

template <class _st> class stack {

public:
    stack();
    void push(_st i);
    _st pop();

private:
    int top;
    _st sta[100];
};

template <class _st> stack<_st>::stack() {
    top = -1;   
}

template <class _st> void stack<_st>::push(_st i) {
    sta[++top] = i; 
}

template <class _st> _st stack<_st>::pop() {
    return sta[top--];  
}

int main(int argc, char * argv[]) {

    stack<int> my_int_stack;
        my_int_stack.push(10);

    stack<string> my_str_stack;
        my_str_stack.push("foo");
        my_str_stack.push("var");
        my_str_stack.pop();

    cin.get();
    return 0x00;    
}