头文件：

//stack.h#ifndef _STACK_H#define _STACK_Hstruct customer{	char fullname[35];	double payment;};typedef customer Item ;class Stack{private:	enum {MAX=10};	Item items[MAX];	int top;public:	Stack();	virtual ~Stack() {};	bool isempty() const;	bool isfull() const;	bool push(const Item & item);	bool pop(Item & item);};#endif // !_STACK_H

.cpp文件：

//stack.cpp#include "stack.h"Stack::Stack(){	top = 0;}bool Stack::isempty() const{	return top == 0;}bool Stack::isfull() const{	return top == MAX;}bool Stack::push(const Item & item){	if (top < MAX)	{		items[top++] = item;		return true;	}	else		return false;}bool Stack::pop(Item & item){	if (top > 0)	{		item = items[--top];		return true;	}	else		return false;}

main：

//main.cpp#include 
    
     #include "stack.h"void get_customer(customer & cu);using namespace std;int main(){		Stack st;	char ch;	customer temp;	double payment = 0;	cout << "Enter A or a to push a customer,\n"		<< "P or p to pop a customer,and Q or q to quit!" << endl;	while ((cin >> ch) && (ch != 'q') && (ch != 'Q'))	{		while (cin.get() != '\n')			continue;		if ((toupper(ch)!= 'A') && (toupper(ch) != 'P' ))		{			cout << "Please enter A,por Q!" << endl;			continue;		}		switch (ch)		{		case 'A':		case 'a':			if (st.isfull())				cout << "The stack is already full!" << endl;			else 				get_customer(temp);			st.push(temp);			break;		case 'P':		case 'p':			if (st.isempty())				cout << "The stack is empty!" << endl;			else			{				st.pop(temp);				payment += temp.payment;				cout << temp.payment << "is poped!";				cout << "payment now total $" << payment << endl;			}			break;				}		cout << "Enter A or a to push a customer,\n"			<< "P or p to pop a customer,and Q or q to quit!" << endl;		}	cout << "Done!" << endl;	return 0;}void get_customer(customer & cu){	cout << "Enter customer name :";	cin.getline(cu.fullname, 35);	cout << "Enter customer payment :";	cin >> cu.payment;	while (cin.get() != '\n')		continue;}
    

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