#include<iostream>using namespace std;class MyStack {public: MyStack(int Size); ~MyStack(); bool stackEmpty(); bool stackFull(); void clearStack(); int stackLength(); //char push(char elem); bool push(char elem); bool pop(char &elem); void stackTravel();private: int size; int top; char *pStack;};?MyStack::MyStack(int Size){? size=0; top=0; size = Size; pStack = new char(Size); cout<<"申請(qǐng)"<<size<<"個(gè)內(nèi)存的空間！"<<endl;}MyStack::~MyStack(){ delete []pStack; pStack=NULL;cout<<"delete"<<endl;}bool MyStack::stackEmpty(){ if (top==0) return true; else return false;}bool MyStack::stackFull(){ if(size==top) return true; else return false;}void MyStack::clearStack(){ top = 0;//覆蓋}int MyStack::stackLength(){ return ?top;}bool MyStack::push(char elem){ if(stackFull()){ return false; } pStack[top]=elem; top++; return true;}bool MyStack::pop(char &elem){ ? ? if(!stackEmpty())? ? {? ? ? ? top--;? ? ? ? elem=pStack[top];? ? ? ? ?? ? ? ? return true;? ? }? ? else? ? {? ? ? ? return false;? ? } }void MyStack::stackTravel(){ for (int i = 0;i < top;i++) { cout << pStack[i]; } cout << endl;}int main() { MyStack pStack(5); char elem; char num[5]={'1','2','3','4','5'}; for(int i=0;i<5;i++){ pStack.push(num[i]); } //pStack.push('p'); //pStack.push('p'); pStack.pop(elem); if (pStack.stackEmpty()) { cout << "The stack is empty"<<endl; } if (pStack.stackFull()) { cout << "The stack is full" << endl; } cout << "The stack's length:" << pStack.stackLength() << endl; /*pStack.push('a'); pStack.push('p'); pStack.push('p'); pStack.push('l');*/ //pStack.push('e'); //pStack.stackTravel(); /*pStack.pop(elem); cout << elem << endl; pStack.clearStack();*/ //cout << "The stack's length:" << pStack.stackLength() << endl; return 0;}