C++带异常处理的CharStack

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头文件：CharStack.h

#pragma once#include<string>#include<exception>class CharStack{private:char *elementData;int capacity;int top;public:CharStack(int capacity);~CharStack(void);int Size();bool IsEmpty();void Push(char c);char Pop();char Peek();void Clear();class CharStack_error : public std::runtime_error {public:CharStack_error(const std::string &str) : std::runtime_error(str){}};};

cpp文件：CharStack.cpp

#include "CharStack.h"CharStack::CharStack(int capacity){    if(capacity<1) throw  CharStack_error("capacity is less than 1");    this->capacity = capacity;    this->elementData = new char[capacity];    this->top = -1;}CharStack::~CharStack(void){}int CharStack::Size() {    return top + 1;}bool CharStack::IsEmpty() {    return top == -1;}void CharStack::Push(char c) {    if(top==capacity-1) throw  CharStack_error("Stack is Full");    elementData[++top] = c;}char CharStack::Pop() {    if(IsEmpty()) throw  CharStack_error("Stack is Empty");    return elementData[top--];}char CharStack::Peek() {    if(IsEmpty()) throw  CharStack_error("Stack is Empty");    return elementData[top];}void CharStack::Clear() {    top = -1;}

测试代码：

#include"CharStack.h"#include<iostream>int main() {try{CharStack stack(2);//stack.Push('a');//stack.Push('b');//stack.Push('c');std::cout << stack.Pop();}catch(const CharStack::CharStack_error &e) {std::cerr << e.what() << std::endl;}}

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