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What is the difference between get and getline ?
mysterysource
- May 31st, 2015
If i am not wrong get() reads char by char and it does not read the blank spaces
anabarai
- Jul 4th, 2011
get() extracts char by char from a stream and returns its value (casted to an integer) whereas getline() is used to get a line from a file line by line. Normally getline is used to filter out delimite...
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How copy constructor works?
sachin_mundhra
- Jan 28th, 2010
Copy Constructor :- This is among one of the default method of class.Base a;Base b = a ; // Here Copy constructor gets called.Here a new instance of class Base will be created and object a data will be copied in object b.Sachin Mundhra
Raju
- Mar 20th, 2007
Copy Constructor uses class name as reference .., it is used to declare and Initialize an object from another object. i.e It is used to create a new object from existing object of same class.
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What is proper and improper inheritance? Explain with an example?
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michaelpyles- Member Since Dec-2007 | Dec 29th, 2007
Proper inheritance occurs when the derived class "IS A" specialized type of the base class. Example Cat IS A Animal.
Improper inheritance occurs when a class is inherited from merely for code reuse, without having any other relationship. Example Cat Inherits from Engine. A Cat is not an engine however both an engine and a cat purr.yzesong
- Jul 31st, 2009
As long as no diamond problems (improper inheritance), single or multiple inheritance can all be proper inheritance. When usng multiple inheritance with diamond problem, you can use virtual inheritance to make the multiple inheritance a proper one.
michaelpyles
- Dec 29th, 2007
Proper inheritance occurs when the derived class "IS A" specialized type of the base class. Example Cat IS A Animal. Improper inheritance occurs when a class is inherited from merely f...
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Can you explain the term "resource acquisition is initialization?"
sonal kumar
- Oct 12th, 2010
Resource Acquisition is Initialisation or shortly RAII is a term closely connected with exception handling and automatic garbage collection(speaking loosely). RAII is defined as the technique of per...
vidhudatta
- Sep 23rd, 2009
It is the technique of performing all the necessary resource allocation in constructor only and all the cleanind in the destructor.
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Difference between "vector" and "array"?
sivakumar.v
- Jul 3rd, 2008
Hi, for the above answer, i am little bit disagreeing, like VECTOR is UNIDIRECTIONAL ?? what does that mean ?? exactly, you mean to say that we cannot have multidimensional vectors ?? if that is ...
bhradwj
- Apr 4th, 2006
The main difference between vector and array isAlways vector is represented as uni-dimensional (ie., one dimensional) but whereas Array can be represented by both one-dimensional as well as two dimensional.Thanks....
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What are auto static variables and auto extern variables?
Biju Nair
- Jun 29th, 2006
A variable declared in one file can be used in another file by declaring it as extern in the second file.
mohit12379
- Apr 20th, 2006
Neither there is a concept of auto static var and Nor a auto extern varibales because auto var are local variable whose lifetime is within a block and located on stack area . Process w...
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What are the things contains in .obj file ? ( compiled result of .cpp file )
smart_coder
- Jan 25th, 2007
Object file is the representation of code that a compiler generates by processing a source code file. Object files contain compact code, often called "binaries". A linker is used to generate an execut...
divya
- Dec 22nd, 2006
I guess it contain stsrtup code assembly instruction which used by compiler to compile the code
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Without using function overloading how can do the same job?
praveennext
- Jan 3rd, 2007
depends on the requirement. if you got fixed no of arguments like,sum(int, int)sum(float, float) .. go for Templates.If you have variable arguments and you know the data types, then make use of va_lis...
satyam
- Dec 18th, 2006
To some extent this can be achieved by using default arguments for the func. But this also depends what all parameters you need to pass in different cases.
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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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Anybody knows how to convert object of one class to object of another class using type conversion? i read in a c++ book simply assign it like this obj1=obj2 where both are objects of different classes..but its not working..plz tell ..thanks in advance :)
vikaspachauri
- Jun 13th, 2007
I think to convert one class object to other can only be done either by using operator overloading of assignment operator or by creating a function which can assign the values of diffrent varaibles explicitly.
Madhurgeek
- May 28th, 2007
This can be done through pointers like A *a1 and B *b1 ok. Then you have to assigh some value to *a1 and *b1 but remember with the use valueat sign(*). Now your task is to convert the objec...
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What is structure padding.Describe briefly?
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Binary Search Algorithm
Why Binary Search Algorithm is a device and conquer based algorithm?
mayankjain477
- Sep 21st, 2010
Binary search algorithm is divide and conquer because in this algorithm, we simply reduces the size of search interval to half in each successive iteration by simply compares the mid value to the key...
ManiCPP
- Apr 2nd, 2010
You probably meant 'Divide and Conquer'. This means you can recursively split your problem into smaller problems of the same type, until you reach a stage where you can solve your problem dire...
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Dead Code
What is dead code? Explain in programmatic way?
mfsi_chinmayb
- Feb 20th, 2012
Hi Dead code (a.k.a Unreachable code),as the name suggests is the portion of the code which is never executed. Point out the word NEVER , as the code above that made the break before that and the exec...
surendrap
- Nov 21st, 2011
Dead code is such a collection of lines of code or code which executes but it its result does not have any significance or affect on output.
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What is the difference between obeject oriented programing langauge and structure oriented programing langauge
potipireddi
- Jan 7th, 2008
Structured Programming Language follows Top Down approach where as Object oriented programming language follows Bottum Up approach.
Basveshwar
- Oct 10th, 2007
In structured programing data is not more important it starts the process1) Start data2) How to access3) DataWhile in object oriented data is more importantdataHow to access start data
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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...
C++ Interview Questions
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