프로그래밍 QnA

#include <iostream>
using std::endl;
using std::cout;
 
class Point{
public:
    Point(int _x=0, int _y=0):x(_x), y(_y){
        cout << "Called Ctor" << endl;
    }
 
    Point(const Point &p) : x(p.x), y(p.y) {
        cout << "Called Copy ctor" << endl;
    }
    const Point& operator=(const Point& p)
    {
        cout << "Called operator= member function" <<endl;
 
        if (&p == this) return *this;

[root@xmen shell]# cat foo1.txt
foo_1
foo_2
foo_3
foo_4
[root@xmen shell]# cat foo2.txt
foo_a,foo_b,foo_c
foo_x,foo_y,foo_z
foo_m,foo_n,foo_o

[root@xmen shell]# cat foo3.txt
foo_1,foo_a,foo_b,foo_c
foo_2,foo_x,foo_y,foo_z
foo_3,foo_m,foo_n,foo_o