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| #include<iostream>
using namespace std;
template<class T>
class Stack
{
public:
Stack():_pData(new T[1]), _capacity(1), _size(0)
{
cout << "creat stack successful" << endl;
}
~Stack()
{
delete [] _pData;
cout << "delete stack successful" << endl;
}
void Push(const T& t)
{
CheckCapacity();
_pData[_size++] = t;
cout << "push " << t << " successful" << endl;
}
T& Pop()
{
T& t = _pData[_size-1];
_size--;
return t;
}
size_t Size()const
{
return _size;
}
size_t Capacity()const
{
return _capacity;
}
private:
void CheckCapacity()
{
size_t size = Size();
size_t capacity = Capacity();
size_t newcapacity = 2 * capacity;
if (size >= capacity)
{
_capacity = newcapacity;
T* tmp = new T[newcapacity];
for (size_t i = 0; i<size; i++)
{
tmp[i] = _pData[i];
}
delete[] _pData;
_pData = tmp;
cout << "capacity add to " << newcapacity << endl;
}
}
private:
T* _pData;
size_t _capacity;
size_t _size;
};
int main(void)
{
Stack<char> s;
char strInput[100]="test\0";
int i = 0;
cout << "input:";
if(!cin.getline(strInput,100))
cout << "error, input too long" << endl;
while(strInput[i] != '\0')
{
s.Push(strInput[i]);
i++;
}
i = 0;
cout << "output:";
while(strInput[i] != '\0')
{
cout << s.Pop();
i++;
}
cout << endl;
system("pause");
return 0;
}
|