C++primer plus 编程练习10.10

编程练习：
1.定义一个类来表示银行账户。数据成员包括出乎姓名、账

号（使用字符串）和存款。成员函数执行如下操作：
*创建一个对象并将其初始化；
*显示储户姓名、账号和存款；
*存入参数指定的存款；
*取出参数指定的款项；
编写一个小程序来显示所有的特性。
程序编写如下：

//文件Bankaccount.h
    class Bankaccount
{
private:
    char name[40];
    char acctnum[25];
    double balance;
public:
    Bankaccount(const char* client, const char* num, double bal = 0.0);
    void show(void) const;
    void deposit(double cash);
    void withdraw(double cash);
};

//文件Bankaccount.cpp
#include "Bankaccount.h"
#include
#include
Bankaccount::Bankaccount(const char* client, const char* num, double bal)
{
    strncpy(name, client,39);
    name[39]='\0';
    strncpy(acctnum,num,24);
    acctnum[24]='\0';
    balance=bal;
}

void Bankaccount::show(void) const
{
    using std::cout;
    cout<<"Name: "<balance)   
    cout<<"You can't withdraw more than you have. ";

//文件Bankaccount1.cpp
#include
#include
#include"Bankaccount.h"
int main()
{
    using namespace std;
    Bankaccount banka1("zhang san","24536",19804);
    banka1.show();
    double cash1;
    char ch;
    cout<<"Do you want to deposit or withdraw money? "
        <<"Please choose d to deposit money, choose w to withdraw money or choose q to quit. ";
    while(cin>>ch&&toupper(ch)!='Q')
    {
        while(cin.get()!='\n')
            continue;
        if(!isalpha(ch))
        {
            cout<<'\a';
            continue;
        }
        switch(ch)
        {
        case 'd':
        case 'D':
            cout<<"Please enter the number of money you deposit: ";
            cin>>cash1;
            banka1.deposit(cash1);
            banka1.show();
            break;
        case 'w':
        case 'W':
            cout<<"Please enter the number of money you withdraw: ";
            cin>>cash1;
            banka1.withdraw(cash1);
            banka1.show();
            break;  
        }

    }
    system("pause"); 
    return 0;
}

程序运行结果满足预期要求。