Catch 'new' memory allocation exception : new « Development « C++ Tutorial

Home
C++ Tutorial
1.Language Basics
2.Data Types
3.Operators statements
4.Array
5.Development
6.Exceptions
7.Function
8.Structure
9.Class
10.Operator Overloading
11.Pointer
12.File Stream
13.template
14.STL Introduction
15.string
16.vector
17.list
18.bitset
19.set multiset
20.valarray
21.queue stack
22.deque
23.map multimap
24.STL Algorithms Modifying sequence operations
25.STL Algorithms Non modifying sequence operations
26.STL Algorithms Binary search
27.STL Algorithms Sorting
28.STL Algorithms Merge
29.STL Algorithms Min Max
30.STL Algorithms Iterator
31.STL Algorithms Heap
32.STL Algorithms Helper
C / ANSI-C
C Tutorial
C++
Visual C++ .NET
C++ Tutorial » Development » new 
5.12.7.Catch 'new' memory allocation exception
#include <iostream> 
#include <new
using namespace std; 
 
class Rectangle 
  int width; 
  int height; 
public
  Rectangle(int w, int h) { 
    width = w; 
    height = h; 
    cout << "Constructing " << width << " by " << height << " rectangle.\n"
  
 
  ~Rectangle() {  
     cout << "Destructing " << width << " by " << height << " rectangle.\n"
  }  
 
  int area() { 
    return width * height; 
  
}
 
int main() 

  Rectangle *p; 
 
  try 
    p = new Rectangle(108)
  catch (bad_alloc xa) { 
    cout << "Allocation Failure\n"
    return 1
  
 
  cout << "Area is " << p->area()
 
  delete p; 
 
  return 0
}
Constructing 10 by 8 rectangle.
Area is 80Destructing 10 by 8 rectangle.
5.12.new
5.12.1.Use new and delete
5.12.2.Global new
5.12.3.Initialize memory
5.12.4.Allocate an array
5.12.5.Allocate an object
5.12.6.Allocate memory for an object
5.12.7.Catch 'new' memory allocation exception
5.12.8.using new to get memory for strings
5.12.9.Allocate an array of objects by overloading new and delete operators
5.12.10.dynamically allocated objects may have constructors and destructors
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.