C++类模板与异常处理

标签：blog   io   os   sp   for   on   2014   log   amp   

#include <iostream>
using namespace std;

template <typename T>
class pushOnFull {
    T _value;
public:
    pushOnFull(T i) {
        _value = i;
    }
    T value() {
        return _value;
    }
    void print() {
        cout << "Stack is full," << _value << "  is not pushed" << endl;
    }
};

template<typename T>
class popOnEmpty {
public:
    void print() {
        cout << "stack is empty, can't pop" << endl;
    }
};
template<typename T>
class Stack{
    int top;
    T *elements;
    int maxSize;
public:
    Stack(int = 20) ;
    ~Stack() {
        delete[] elements;
    }
    void Push(const T & data);
    T Pop();
    T GetEle(int i) {
        return elements[i];
    }
    void makeEmpty() {
        top = -1;
    }
    bool isEmpty() const {
        return top == -1;
    }
    bool isFull() const {
        return top == maxSize-1;
    }
    void printStack();

};

template<typename T>
Stack<T>::Stack(int maxs) {
    maxSize = maxs;
    top = -1;
    elements = new T[maxSize];
}
template<typename T>
void Stack<T>::printStack() {
    for(int i = 0; i < top; i++) {
        cout << elements[i] << " ";
    }
    cout << endl;
}
template<typename T>
void Stack<T>::Push(const T &data) {
    if(isFull()) {
        throw pushOnFull<T>(data);
    }
    elements[++top] = data;
}
template<typename T>
T Stack<T>::Pop() {
    if(isEmpty()){
        throw popOnEmpty<T>();
    }
    return elements[top--];
}

int main()
{
    int a[9] = {1, 8, 7, 6, 5, 4, 3, 2, 1}, b[9] = {0}, i;
    Stack<int> istack(8);
    try {
        for(int i = 0; i < 9; i++)
            istack.Push(a[i]);
        istack.printStack();
    }
    catch(pushOnFull<int> & eobj) {
        eobj.print();
    }
    try{
        for(int i = 0; i < 9; i++)
            b[i] = istack.Pop();
        istack.printStack();
    }
    catch(popOnEmpty<int> & eobj) {
        eobj.print();
    }
    cout << "Pop order is:";
    for(int i = 0; i < 9; i++)
        cout << b[i] << " ";
    cout << endl;
    return 0;
}

C++类模板与异常处理

标签：blog   io   os   sp   for   on   2014   log   amp   

原文地址：http://blog.csdn.net/achiberx/article/details/40901973