Mega Code Archive
Allocate an array of objects using new operator
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#include <iostream>
#include <new>
using namespace std;
class Rectangle {
int width;
int height;
public:
Rectangle() {
width = height = 0;
cout << "Constructing " << width << " by " << height << " rectangle.\n";
}
Rectangle(int w, int h) {
width = w;
height = h;
cout << "Constructing " << width << " by " << height << " rectangle.\n";
}
~Rectangle() {
cout << "Destructing " << width << " by " << height << " rectangle.\n";
}
void set(int w, int h) {
width = w;
height = h;
}
int area() {
return width * height;
}
};
int main()
{
Rectangle *p;
try {
p = new Rectangle [3];
} catch (bad_alloc xa) {
cout << "Allocation Failure\n";
return 1;
}
cout << "\n";
p[0].set(3, 4);
p[1].set(10, 8);
p[2].set(5, 6);
for(int i=0; i < 3; i++)
cout << "Area is " << p[i].area() << endl;
delete [] p;
return 0;
}
Constructing 0 by 0 rectangle.
Constructing 0 by 0 rectangle.
Area is 12
Area is 80
Area is 30
Destructing 5 by 6 rectangle.
Destructing 10 by 8 rectangle.
Destructing 3 by 4 rectangle.
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