c++ 析构函数的调用

#include <iostream>
using namespace std;

class three_d
{
int x, y, z;
public:
three_d()
{
x = y = z = 0;
}
~three_d()
{
cout <<"destructor---\n ";
}
three_d(int i, int j, int k)
{
x = i;y = j;z = k;
}
three_d operator = (three_d op2);
void show();
};

three_d three_d::operator = (three_d op2)
{
x = op2.x;
y = op2.y;
z = op2.z;

return * this;
}

void three_d::show()
{
cout << x << ", ";
cout << y << ", ";
cout << z << "\n ";
}

int main()
{
three_d a(1, 2, 3), c;

cout << "before c = a;\n ";
c = a;
cout << " after c = a;\n ";
c.show();

return 0;
}

运行结果如下:

C函数的调用！ c中这样的函数怎么调用 请教C语言的“函数调用”问题 C语言 函数调用 的问题。 C语言函数递归调用的疑问 c语言中函数的调用方法 C语言中,函数调用的问题! C语言函数的递归调用 C语言调用函数的开销 C调用函数问题