opnew.cpp
804 Bytes
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
37
38
39
40
41
#include <iostream>
using namespace std;
class Object
{
public:
Object ()
{
cout << "Object::Object() called" << endl;
}
};
int
main ()
{
Object *p1 = new Object; /* Object::Object() used */
Object *p2 = new Object (); /* Object::Object() used */
int *p3 = new int; /* not initialized ! */
int *p4 = new int (); /* initialized to zero */
Object *p5 = new Object[7]; /* Object::Object() used 7 times */
int *p6 = new int[7]; /* not initialized ! */
int *p7 = new int[7](); /* initialized to zero */
if(*p3)
cout << "*p3 nonzero" <<endl;
if(*p4)
cout << "*p4 nonzero" <<endl;
if(*p6)
cout << "*p6 nonzero" <<endl;
if(*p7)
cout << "*p7 nonzero" <<endl;
delete p1;
delete p2;
delete p3;
delete p4;
delete[]p5;
delete[]p6;
delete[]p7;
}