1 #include <iostream> 2 3 using namespace std; 4 //static类成员 5 6 class Account 7 { 8 public: 9 Account(string name,double money): 10 owner(name),amount(money){} 11 double getAmount() const 12 { 13 return this->amount; 14 } 15 void sepoist(double money) 16 { 17 this->amount+=money; 18 } 19 //静态函数操作静态的数据成员 20 //静态的成员函数中不能使用this指针 21 static double rate() 22 { 23 return interestRate; 24 } 25 static void rate(double newinterestRate) 26 { 27 interestRate=newinterestRate; 28 } 29 private: 30 string owner; 31 double amount; 32 //将利率设置成为静态的数据成员，即利率只有一个 33 //所有的对象都使用一个利率 34 static double interestRate; 35 }; 36 //进行初始化 37 double Account::interestRate=0.015; 38 39 int main() 40 { 41 //静态的函数可以用类名直接调用 42 Account::rate(0.026); 43 Account a("张三",1000); 44 Account b("李四",2000); 45 a.sepoist(500); 46 b.sepoist(600); 47 cout<<a.getAmount()<<endl; 48 cout<<b.getAmount()<<endl; 49 cout<<a.rate()<<endl; 50 a.rate(0.018); 51 cout<<b.rate()<<endl; 52 53 return 0; 54 }