1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
class Birthdate { // the nested class
private:
int month; int day; int year;
public:
Birthdate(int m=0, int d=0, int y=0)
{setData(m,d,y); cout << "Constructor for nested class!\n";}
int getDay(void) const {return day;}
void setData(int m, int d, int y) {month = m; day = d; year = y;}
int zz;
~Birthdate(void) {cout << "Destructor for nested class!\n";}
};
class Person { // the outer class
private:
Birthdate bdate1; int psuid;
public:
Birthdate bdate2;
Person(int ps, int m, int d, int y) : bdate1(m,d,y),bdate2(m,d,y)
{setData(ps); cout << "Constructor for outer class\n";}
void setData(int ps) {psuid=ps;}
// int dbogus1(void) {return bdate1.day;}
int dbogus2(void) {return bdate1.zz;}
int dbogus3(void) {return bdate1.getDay();}
~Person(void) {cout << "Destructor for outer class!\n";}
};
int main(void) {
Person bob(3251,9,3,1965);
// Person matt; // syntax error – why?
Birthdate bdate3; // NOT a syntax error
cout << bob.bdate2.zz << endl;
//5 cout << bob.bdate1.zz << endl; // syntax error – why?
//6 cout << bob.bdate1.day << endl; // syntax error – why?
//7 cout << bob.bdate1.getDay() << endl; // syntax error – why?
cout << bob.bdate2.getDay() << endl;
cout << bob.dbogus2() << endl;
}
|
