第十章：对象和类

 1 #include<iostream>
 2 using namespace std;
 3 class BankAccount
 4 {
 5     string m_name;
 6     string m_num;
 7     unsigned int m_balance;
 8     public:
 9             BankAccount(string name,string num,unsigned balance)
10             {
11                 m_name = name;
12                 m_num = num;
13                 m_balance = balance;
14             }
15             void show() const
16             {
17                 cout << m_name << endl;
18                 cout << m_num << endl;
19                 cout << m_balance << endl;
20             }
21             void inDeposit(unsigned amount)
22             {
23                 m_balance = m_balance + amount;
24             }
25             void deDeposit(unsigned amount)
26             {
27                 if(m_balance < amount)
28                     m_balance = 0;
29                 else
30                     m_balance = m_balance - amount;
31             }
32             
33 };
34 int main()
35 {
36     BankAccount bank("Jack","123",10000);
37     bank.show();
38     bank.inDeposit(1000);
39     bank.show();
40     bank.deDeposit(1500);
41     bank.show();
42 }