string type constructor : Constructor « Class « C++

Home
C++
1.Bitset
2.Class
3.Console
4.Data Structure
5.Data Type
6.Deque
7.Development
8.File
9.Function
10.Generic
11.Language
12.List
13.Map Multimap
14.Overload
15.Pointer
16.Qt
17.Queue Stack
18.Set Multiset
19.STL Algorithms Binary search
20.STL Algorithms Heap
21.STL Algorithms Helper
22.STL Algorithms Iterator
23.STL Algorithms Merge
24.STL Algorithms Min Max
25.STL Algorithms Modifying sequence operations
26.STL Algorithms Non modifying sequence operations
27.STL Algorithms Sorting
28.STL Basics
29.String
30.Valarray
31.Vector
C / ANSI-C
C Tutorial
C++ Tutorial
Visual C++ .NET
C++ » Class » ConstructorScreenshots 
string type constructor
string type constructor
  

#include <iostream>
#include <cstring>
#include <cstdlib>
using namespace std;

class StringClass {
  char *p;
  int len;
public:
  StringClass(char *ptr);
  ~StringClass();
  void show();
};

StringClass::StringClass(char *ptr)
{
  len = strlen(ptr);
  p = new char [len+1];
  if(!p) {
    cout << "Allocation error\n";
    exit(1);
  }
  strcpy(p, ptr);
}

StringClass::~StringClass()
{
  cout << "Freeing p\n";
  delete [] p;
}

void StringClass::show()
{
  cout << p << " - length: " << len;
  cout << endl;
}

int main()
{
  StringClass stringObject1("www.java2java.com"), stringObject2("www.java2java.com");

  stringObject1.show();
  stringObject2.show();

  return 0;
}


           
         
    
  
Related examples in the same category
1.Constructing and Destructing sequence for three level inheritance
2.Parameterized ConstructorsParameterized Constructors
3.Use constructor to init member variablesUse constructor to init member variables
4.Use Double value as the constructor parameterUse Double value as the constructor parameter
5.Constructor: different parameter typeConstructor: different parameter type
6.Use automatic conversions to assign new valuesUse automatic conversions to assign new values
7.Call constructor from base classCall constructor from base class
8.Constructor with 2 parametersConstructor with 2 parameters
9.Define constructor outside a class definition
10.overloading class constructors
11.Constructor with parameter value checking
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.