三角形类的复制构造函数

#include <iostream>

using namespace std;
class Triangle
{
public:
void showMessage();
Triangle (int x,int y,int z)
{
a=x;b=y;c=z;
}
Triangle(const Triangle &x);

private:
int a,b,c;

};

Triangle::Triangle(const Triangle &x)
{
a=x.a;
b=x.b;
c=x.c;

}
void Triangle::showMessage()
{
cout <<"a="<<a<<"b="<<b<<"c="<<c<<endl;

}
int main()
{
Triangle tri1(3,4,5);
tri1.showMessage();
Triangle tri2(tri1);
tri2.showMessage();

return 0;
}