Mega Code Archive
Use new operator to allocate memory for object
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#include <iostream>
#include <stdlib.h>
using namespace std;
class loc
{
int longitude, latitude;
public:
loc(void) {}
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);
}
int main(void)
{
loc *p1, *p2;
p1 = new loc(10,20);
if (!p1)
{
cout << "Allocation error\n";
exit(1);
}
p2 = new loc(-10,-20);
if (!p2)
{
cout << "Allocation error\n";
exit(1);
}
p1->show();
p2->show();
delete p1;
delete p2;
exit (0);
}
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