C++常函数

 1 #include <iostream>
 2 using namespace std;
 3 
 4 class Test
 5 {
 6 private:
 7     int x, y;
 8 public:
 9     Test() { x = 0; y = 0;}
10     void changeValue() const 
11     { 
12         x = 7; 
13         y = 7; 
14         print();
15     }
16     void print() { cout << x << endl << y << endl; }
17 };
18 
19 int main()
20 {
21     Test t;
22     t.changeValue();
23     //t.print();
24     return 0;
25 }