C++学习(6) 

 1 //析构函数的学习
 2 #include<iostream.h>
 3 class Point{
 4     private:
 5         int x;
 6         int y;
 7     public:
 8         Point(){}
 9         Point(int x,int y){
10             this->x=x;
11             this->y=y;
12             cout<<"Point类构造函数调用"<<endl;
13         }
14         Point(Point &c){
15             this->x=c.x;
16             this->y=c.y;
17             cout<<"point类构造函数调用"<<endl;
18         }
19         ~Point(){
20             cout<<"point类析构函数调用"<<endl;
21         }
22 };
23 
24 class Line{
25     private:
26         Point a;
27         Point b;
28     public:
29         Line(){}
30         Line(int x1,int y1,int x2,int y2):a(x1,y1),b(x2,y2){//似乎调用构造函数只能这样调用？？？？
31     //        a(x1,y1);
32     //        this->b(x2,y2);
33             cout<<"Line类构造函数1调用"<<endl;
34         }
35         Line(Point &a,Point &b){
36             this->a=a;
37             this->b=b;
38             cout<<"Line类构造函数2调用"<<endl;
39         }
40         ~Line(){
41             cout<<"Line类析构函数调用"<<endl;
42         }
43 };
44 
45 
46 int main(){
47     cout<<"构造函数调用过程"<<endl;
48     Line myLine(1,1,5,5);
49     return 0;
50 }

 

posted on 2018-06-29 18:49  孙悟空son_ku_kong  阅读(110)  评论(0)  编辑  收藏  举报

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