deep copy c 2b 2b

1// DEEP COPY
2class X
3{
4private:
5    int i;
6    int *pi;
7public:
8    X()
9        : pi(new int)
10    { }
11    X(const X& copy)   // <-- copy ctor
12        : i(copy.i), pi(new int(*copy.pi))  // <-- note this line in particular!
13    { }
14};
15

1//SHALLOW COPY
2class X
3{
4private:
5    int i;
6    int *pi;
7public:
8    X()
9        : pi(new int)
10    { }
11    X(const X& copy)   // <-- copy ctor
12        : i(copy.i), pi(copy.pi)
13    { }
14};
15