C++對象數組的創建

使用一維指針創建對象數組：

1. #include <iostream>
2. #include <string>
3. using namespace std;
5. int nextStudentID = 1;
6. class StudentID
7. {
8. public:
9. StudentID()
10. {
11. cout << "StudentID()" << endl;
12. value = nextStudentID++;
13. cout << "value:" << value << endl;
14. }
15. ~StudentID()
16. {
17. --nextStudentID;
18. cout << "~StudentID()" << endl;
19. }
20. protected:
21. int value;
22. };
24. class Student
25. {
26. public:
27. Student(string pName = "noName")
28. {
29. cout << "Student()" << endl;
30. name = pName;
31. cout << "name:" << name << endl;
32. }
33. ~Student()
34. {
35. cout << "~Student()" << endl;
36. }
37. protected:
38. string name;
39. StudentID id;
40. };
42. int main(int argc, char **argv)
43. {
44. int i;
45. cin >> i;
46. Student *p = new Student [i];
47. delete[] p;
48. cout << "nextStudentID:" << nextStudentID << endl;
49. return 0;
50. }

結果：

1. >>3
2. StudentID()
3. value:1
4. Student()
5. name:noName
6. StudentID()
7. value:2
8. Student()
9. name:noName
10. StudentID()
11. value:3
12. Student()
13. name:noName
14. ~Student()
15. ~StudentID()
16. ~Student()
17. ~StudentID()
18. ~Student()
19. ~StudentID()
20. nextStudentID:1