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We can overload assignment operator as a normal function.But we can not overload assignment operator as friend function why?
sachin_mundhra
- Dec 18th, 2009
Because assignment operator is one of the default method provided by the class.
sumanjit
- Sep 15th, 2005
If the operation modifies the state of the class object, it operates on, it must be a member function, not a friend fucntionThus all operator such as =, *=, +=, etc are naturally defined asmember func...
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DLL Application
What are DLLs? How they are used in the applications?
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Find nth node from end of a singly linked list
j_l_larson
- Oct 19th, 2009
node*GetNthFromEnd(node* pHead, int n) { if ( ! pHead ) return NULL; int i = 0; node* p = pHead; node* ...
Apoorv
- Feb 16th, 2007
A simple way out would be..Use two pointers..*traverse and *nth_positionboth initialised to null..While you traverse to the end of the list using *traverse,let *nth_position follow only after n iterat...
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Concatenate two circular linked lists
Write a program to concatenate two circular linked lists into a single circular list.
j_l_larson
- Oct 19th, 2009
class node {public: node(int n) : m_n(n) { m_pNext = this; } ~node() {} void SetNext( node* p ) { m_pNext = p; } node* GetNext() const { return m_pNext; }&n...
Bhimasena
- Jul 13th, 2009
Void cat(Node* ll1, Node* ll2){Node* temp = ll1->next;ll1->next = ll2->next;ll2->next = temp;}
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Reversing Linked List
How to reverse a linked list using only one pointer?
jjoshi
- Oct 9th, 2009
Void revshow(){struct node *p;int temp[100],count=0,i;p=head;for(i=0;p!=NULL;i++,p=p->next)temp[i]=p->num;for(i=i-1,p=head;p!=NULL;i--,p=p->next)p->num=temp[i];}
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How will you detect if there is memory leak in your C++ program?
vijay.badola
- Oct 4th, 2009
In LINUX environment one can use VALGRIND and MPATROL free tools to find out possible memory leaks in programs.
santhosh.kanchanapally
- Feb 18th, 2009
By overloading the new and delete operators, we can find the memory leaks as shown in following program ,#include "stdafx.h"#include <iostream>#include <string>using namespace st...
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Count Number of characters using Pointers
Write a program to count the number of characters in a string using pointers.
madhuti
- Sep 29th, 2009
Int main(void) { char* str = "Hellolklklk"; int i=0; for(i=0; *str; i++, str++); printf("count= %dn", i);return 0;}
paindriven
- Jun 12th, 2009
unsigned int charCounter(char const* str){ unsigned int counter = 0; char const* data = str; while (data != NULL && *data != '') { data++; counter++; } return counter;}
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How can I instantiate only three instances of an application ?If I open 4th instance, I have to close 1st instance like wise if I open 5th one I have to close 2nd one automatically ?
newlife
- Sep 24th, 2009
This can be done using one static variable which will keep account of object and a list which has object reference. In constructor check if static variable is 4 then remove one object from list and ad...
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Is it possible to implement Polymorphism (either compile time / runtime) in “C” ? If yes how?
Ashwan
- Jul 26th, 2007
Dont have as such idea whether we can explicitly implement the Polymorphism or not.....but internally it gets done incase of "C".Consider the example of printf/scanf.? Both are library functions and?...
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Suppose there is a txt file with following format:Student name Grades in subjectsX ABA+CDA+Y B+CAA+AAthere can be many students with there grades in various subjects. (number of subjects are unknown)Possible values of grade are: A, A+, B, B+, C, D now suppose the file gets corrupted and all '+' are replaced by 'A'Write a program to restore the file
MumblesCrzy
- Sep 24th, 2009
So I don't know if it's possible to make a perfect program, but one that can get a close estimate would go as such.If all the +'s in the files have been changed to A's then the two exa...
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What is an iterator?
vidhudatta
- Sep 23rd, 2009
Iterator is an object that allows the programmer to traverse through the entire collection.
shwetashreemal
- Jul 25th, 2009
Iterator is a class that is used to traverse through the objects maintained by a container class.these are five types are:-1.Input iterator2.output iterator3.forward iterator4.bidirectional iterator5....
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Define copy constructor? What is the use of copy constructor?
rajangidwani
- Sep 8th, 2009
Copy constructor is 1. a constructor function with the same name as the class 2. used to make deep copy of objects. There are 3 important places where a copy constructor is called. 1. When an object i...
vss
- Jun 29th, 2006
A copy constructor is used to initialize a newly declared variable from an existing variableA variable is declared which is initialized from another object,A value parameter is initialized from its co...
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Inline Function Advantages
What are the advantages of inline functions over macros?
ashwin2090
- Aug 28th, 2009
Inline function very much confused to use it or not.Well I want to just tell you that it has large number of disadvantages than advantages Inline function works faster than normal function. They are ...
AnisHasan
- Jul 16th, 2009
Beside the adventages which are mentioned there are some more advantages of Inline Functions over Macros1> Macro call is resolve at the compile time and compiler replce Identifier with charecter se...
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Top Down and Bottom up Approach
Why we fallow top down approach in c-language and bottom up approach in c++?explain?
angira
- Aug 22nd, 2009
Top-down approach views from generalizaton to specilization where as bottom-up approach does the reverse of it.
shantanu_hbd
- Apr 25th, 2009
When we follow OOP in C++ we first design our classes based on the domain model or the design. While in C where we don't follow OOP we try to address problem at a higher level and then try designing ...
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Default Constructor
What is the Default Constructor?
shreya_sen
- Aug 20th, 2009
A default constructor is a type of constructor which does not have any arguments/parameters.Thus it is executed as the object is created.
VENKATGOPU
- Jun 10th, 2009
The deafual constructor is a constructor. It may be contains arguemnets (default arquemnets) or It may not be contains arquemnetExampleclass A{ public: &...
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Why Pointers are not used in C Language. What are the main differences between C and C++
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What is the difference betwen wait() and delay()?
yzesong
- Aug 1st, 2009
In a proces which issues wait( ) will suspend itself until either a certain process terminated(wait(n), n is PID) or all process terminated (wait()). Delay is like pausing for a certain period of time, same as sleep( ).
3bu1
- Aug 21st, 2007
Wait()....event triggereddelay()....time trigerred
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Why cann't we overload the sizeof, :?, :: ., .* operators in c++
yzesong
- Jul 31st, 2009
In order to avoid operator ambiguity , :?, ::, . operators are not overloaded.?
Amritanshu Agrawal
- Sep 5th, 2006
Hi all,Firstof all only .,:: and .* operators never be overladed.Because They take name, rather than a value,as their socound operand and provide the primary means of reffering to members.Allowing them to be overloaded would lead to subtlety.
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Is there any way to write a class such that no class can be inherited from it. Please include code
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Do Nothing Constructor
What are Default Constructor and Do Nothing Constructor
yzesong
- Jul 30th, 2009
I think Do nothing constructor is the one OS offered, which has no argument in it, of course no return type. The default constructor has the same signature as DO nothing constructor, but you can write...
inspirevinchi
- May 16th, 2009
Constructor with no arguments or arguments with default value are called default constructor.
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