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What is difference between Constant Object and Constant variable
swatichari
- Sep 30th, 2010
Constant Object is a variable of user-defined class which do not invode non-const member function.Constant variable sustains a value constant of built-in? data type.
jay
- May 16th, 2007
Constant variables are the variables whose value cannot be changed through out the programme but if any object is constant, value of any of the data members (const or non const) of that object cannot be changed through out the programme. Constant object can invoke only constant function.
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What is the difference between realloc() and free()
cshaw
- Mar 31st, 2009
The free subroutine frees a block of memory previously allocated by the malloc subroutine. Undefined results occur if the Pointer parameter is not a valid pointer. If the Pointer parameter is a null v...
dasam
- Mar 29th, 2007
The realloc() function changes the size of the memory object pointed to by ptr to the size specified by sizefree() function deallocates the block of memory previously allocated using a call to malloc, calloc or realloc, making it availbale again for further allocations.
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What is difference between object oriented programing language and structure oriented programing?
sangappa_geek
- Mar 20th, 2007
We can resuse the code in object oriented language. we can handle errors properly.everything relates to real world objects.
kesi
- Feb 26th, 2007
Object Oriented Programming : It means, which follows object oriented concepts that is object oriented programming for example : c++, javaand also c++ is not complete objected oriented. But...
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How to write a program such that it will delete itself after execution?
tahoekid
- Jun 13th, 2011
The Richter method does delete the original file, but the temporary file remains behind.? I compiled this as-is, and on Windows Server 2003, and 64 bit Windows 7, the temp file is not deleted. Presum...
kumar
- Mar 18th, 2006
if the solution is needed for the unix platform. Then you can create a pthread at the bottom of the program, take the current process id of the parent and make it a deamon by using the standard unix c...
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What is a "RTTI"?
mohit12379
- Apr 20th, 2006
Run-time type information (RTTI) is a mechanism that allows the type of an object to be determined during program execution. RTTI was added to the C++ language because many vendors of class libraries ...
A
- Jan 28th, 2006
In case of Virtual function we are responsible for deciding the function at run time. Its our logic that reflects and no one does any thing.Where as in case of RTTI TYPE is found of object. We dont do any thing for that. We simply use that.
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What is Psychic Windows?
(In relation with Windows Programming using VC++)
pawan
- Jul 15th, 2006
Need information about psychic window for exam.
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Class A(){};int main(){ A a;}Whether there will be a default contructor provided by the compiler in above case ?
bappa
- Jun 5th, 2006
Constructor is initialized the data members....in the above case no data members r there in the class.....so....i think compiler call default constructor but it does nothing...
vidhya165
- Jan 30th, 2006
When a c++ program is compiled and executed the constructor is invoked first. if a constructor is not declared or defined by the user then the compiler invokes the default constructor.
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Hey anybody help me to write code for this programwap which display year,month & day presents in a year for eg.1. no. is 14 print 2 weeks2. no is 90 print 3 months3. no is 365 print 1 yearuser can input any no
chiyuwang
- Jun 20th, 2008
#include <iostream>using namespace std;void CalculateDate(const unsigned int _date);int _tmain(int argc, _TCHAR* argv[]){ unsigned int date; cout<<"...
swetha76
- Sep 27th, 2006
int rem_yr=0,yr=0, n,rem_mon=0,mon=0,rem=0,wek=0;printf(" enter a numbern");scanf("%d",&n); if(n>=365) { yr = n/365; rem_yr =n%365; &n...
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Fork () function
How does a process generates Child process using Fork() function.The concept of it.
For example: A process execute the code
fork()
fork()
fork()
Total Number of "child" process created is/are ? -
What are proxy objectives
burraganesh
- Dec 7th, 2008
Proxy objects are nothing but objects of proxy class.A proxy class is a class that provides an interface between actual class (implementation) and client.
dasam
- Mar 29th, 2007
A proxy class is a class that implements a list of interfaces specified at compile time. The proxy object typically holds a reference to an internal object that implements the same interfaces (or parts of them).
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Is Templates also a type of Static Polymorphism?
dasam
- Mar 29th, 2007
Template classes are used to implement function overloading, which is done during the compile time. So it is compile time polymorphism.
Sri
- Nov 20th, 2006
Yes...templates are static polymorphism...
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How can i overload the subscript operator with more than i dimension? if possible give an example.. pls dont ignore
prashantha shet
- Oct 7th, 2007
If your question is about how to write an operator overload with multiple dimensions, then you can overload operator (). The [] operator is a binary operator with an implied "this". This means you can...
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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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What is Smart Pointer?
remoprakash
- Jul 24th, 2007
Smart pointers are objects which store pointers to dynamically allocated (heap) objects. They behave much like built-in C++ pointers except that they automatically delete the object pointed to at the ...
Prakash
- Jul 24th, 2007
Smart pointers are objects which store pointers to dynamically allocated (heap) objects. They behave much like built-in C++ pointers except that they automatically delete the object pointed to at the ...
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C++ Interview Questions
Ans