cus_newd.cpp
上传用户:dq031136
上传日期:2022-08-08
资源大小:802k
文件大小:1k
- #include <iostream.h>
- #include <stdlib.h>
- class loc
- {
- int longitude, latitude;
- public:
- loc(void) {} // Used to construct temporaries
- loc (int lg, int lt)
- {
- longitude = lg;
- latitude = lt;
- }
- void show(void)
- {
- cout << longitude << " ";
- cout << latitude << endl;
- }
- void *operator new(size_t size);
- void operator delete(void *p);
- };
- void *loc::operator new(size_t size)
- {
- cout << "In the custom new function." << endl;
- return malloc(size);
- }
- void loc::operator delete(void *p)
- {
- cout << "In the custom delete function." << endl;
- free(p);
- }
- void main(void)
- {
- loc *p1, *p2;
- p1 = new loc(10,20);
- if (!p1)
- {
- cout << "Allocation errorn";
- exit(1);
- }
- p2 = new loc(-10,-20);
- if (!p2)
- {
- cout << "Allocation errorn";
- exit(1);
- }
- p1->show();
- p2->show();
- delete p1;
- delete p2;
- exit (0);
- }