拷贝构造函数

#include "stdafx.h"
#include
using namespace std;

class cat
{
public:
 cat();
 cat(cat*);
 void setInfo(int age,int color,int weight);
 void printInfo();
private:
 int age;
 int weight;
 int color;
};

cat::cat()
{
}

cat::cat(cat* a_cat)
{
 this->age = a_cat->age;
 this->color = a_cat->color;
 this->weight= a_cat->weight;
}

void cat::setInfo(int age,int color,int weight)
{
 this->age = age;
 this->color = color;
 this->weight = weight;
}

void cat::printInfo()
{
 cout<<"age is "<< age <     <<"color is "<  <<"weight is "<}

int _tmain(int argc, _TCHAR* argv[])
{
 cat kitty;
 kitty.setInfo(11,12,13);

 cat lucy(&kitty);
 lucy.printInfo();

 return 0;

}

 

拷贝构造函数不是很难实现，先了解它的用法，然后再深入的思考它的意义。

 

运行结果如下：

age is 11
color is 12
weight is 13
请按任意键继续. . .