class template

[xuwqiang1994]

when debug,occur SIGSEGV default

#include <iostream>
#include <string>

using namespace std;

template<typename T>
class Stack
{
public:
    Stack(int size);
    ~Stack();
    bool isEmpty();
    bool isFull();
    void push(T data);
    T pop();

private:
    T *space;
    int top;
    int maxsize;
};

template<typename T>
Stack<T>::Stack(int size)
{
    space=new T[size];
    top=-1;
    maxsize=size;
}

template<typename T>
Stack<T>::~Stack()
{
    delete[] space;
}

template<typename T>
bool Stack<T>::isEmpty()
{
    return top==-1;
}

template<typename T>
bool Stack<T>::isFull()
{
    return top==maxsize-1;
}

template<typename T>
void Stack<T>::push(T data)
{
    space[top++]=data;
}

template<typename T>
T Stack<T>::pop()
{
    return space[--top];
}

int main()
{
    Stack<string> s(100);
    for(int i=0;i<10;i++)
    {
        if(!s.isFull())
            s.push("x");
    }
    while(!s.isEmpty())
    {
        cout<<s.pop()<<" ";
    }

    return 0;
}

[keskiverto]

On line 63 the line 27 is called.
On first time of line 66, the line 52 is called.

Therefore, you effectively call:
space[ -1 ] = data;

[xuwqiang1994]

thanks . should be ++top in push() and top-- in pop()