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Why friend function cannot be used to overload the assignment operator?
rajani_vaddepalli15
- Sep 15th, 2008
Answer is simple...A friend function is a non-member function of the class to which it has been defined as friend.Therefore it just uses the functionality( or the functions and data ) of the class,so. it wont consists the inplementation for that class.(any)
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While copying the objects if you say X a = b and asssume that '=' operator is overloaded then what it will call, a copy constructor or operator overloading function
adeelqamar8
- Sep 12th, 2008
Copy constructor would be called to perform the deep copy of object b into object a.
vikas_3000
- Aug 13th, 2008
It is not operator overloading, it is just copy constructor which assign that the value of b is copied to a.
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What is a far pointer? where we use it?
laxmii.s
- Aug 20th, 2008
Far pointer is a pointer variable. It is just like near pointer. But if we use large memory models, then we can use these far pointers. Because these?far pointers?occupy 4 bytes of memory.
Vikas
- Jan 3rd, 2007
Near, far pointers are the types of pointers in C. By using these pointers we can directly access memory to interact hardware before starting hardware programming in C.
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Explain the different forms of Polymorphism.
From a practical programming viewpoint, polymorphism exists in three distinct forms in Java: Method overloading Method overriding through inheritance Method overriding through the Java interface
vikas_3000
- Aug 13th, 2008
Method OverloadingMethod OverridingOperator OverloadingThese are the different forms of Polymorphism in Java.
manish_rana786
- Apr 3rd, 2008
It holds more than one form, It has two types : -1. compile time polymorphism: - That holds the overloading.2. run time polymorphism: -That holds the overridding.
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Comment: C++ "includes" behavior and java "imports"
whenkeys
- Aug 11th, 2008
Both behave the same way except that when we import in java we can import single class also but we have to include a file and not a Class in C++.eg: import java.lang ...
r.praveenkumar
- Mar 20th, 2008
By using include preprocessor kn c++ the program size will be slightly increased but when we use import statement in java the program size will not be increased at all
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What is Polymorphism?
whenkeys
- Aug 11th, 2008
Poly [many] morph [form] as the name says many forms is supported. Two types of Polymorphism are operator overloading and function overloading.operator overloading => +operator can be implemented t...
SHAKTI KUMAR
- Oct 16th, 2005
A property by which we can send the same masage to objects of serval diffrent class and each object can response in a diffrent way depending on its class..
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Can we create a object of Base class?..If we can not create a object of base class then why we need Abstract class?
ABYSS
- Oct 12th, 2006
Yes, we can create an object of the Base class.If we make a class as abstract then we can't create an object of that class.we can create only pointer of that class this is because to provide one interface to access and so that runtime time polymorphism can implement.
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What is the default sizes of String and StringBuffer?
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What is the similarities between macro and function?
VCCoder
- Aug 6th, 2008
We can pass arguments into the macro as well as function.We can say that a Macro is smilar to a global function
Megha
- Nov 10th, 2006
Helo Ranjith....Thanx for explaining the difference b/w a macro and a function.......
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Void pointer
Explain about void pointer and it's real time usage in Business
wael.salman
- Jul 16th, 2008
Pointer to void, or a void pointer, is a special type of pointer that has a great facility of pointing to any data type.Example:int i; float f; int* exf; float* ...
kamal7725
- Nov 30th, 2007
Void pointer are something like you put your stuff like shoes, bag, shirt in your suitcase. and then you just take out all that stuff from suitcase.so we can cast any pointer to void*, and after we ca...
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What are the differences between structures and arrays?
misurkar.sachin
- Jul 15th, 2008
Strcture : It is collection of data (Data Types) which can be different in nature e.g. Student{ ...
yogeshpanda
- Sep 21st, 2005
Structure can contain different types of data members but Array contain same types of data members.
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How to resolve many to many relationship?
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What is a Presistent, Transient Object?
pavanhiran
- Jan 26th, 2008
HERE IS ANSWER FOR YOUR QUESTION:TRANSIENT OBJECTS ARE TEMPERORY IN NATURE. ALSO THEY CANT BE SERIALISED UNLIKE PERSISTENT OBJECTS. OBJECT WHICH IS PERMENT IN NATURE TILL THE END OF THE PROGRAM OR REM...
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In header files whether functions are declared or defined?
Silvio
- Jul 4th, 2008
It is possible to declare and define body functions in header files, there is no restrictions to create your all code inside a header file.SourceCode.c:#include "SourceCode.h"SourceCode.h:#i...
Yashwant Pinge
- Apr 27th, 2006
It depends on the user that creats the header files.Mostly headers file contains other file declaration and function declaration.Note that declaration and defination of functions are two different things
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What is the memory allocation for pointer?
amar
- Aug 8th, 2007
Memory alllocation for pointer is same as unsigned integer.bcoz pointer variable stores the address of the variable to which it is pointing to regardless of its data type.for eg. char *charptr;int *intptr;here sizeof(charptr)==sizeof(intptr)
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What are the advantages of using pointers in a program?
gunturi.prabhakar
- May 30th, 2008
The advantages of using pointers are: 1: you can work with the address of the variable2: you can reference the variables in more different easiest ways....??? e.g? int a[10],*b;??????????...
thathireddy
- Jan 27th, 2007
Thanks your's answer is wellplease send me examples of pointers like functions using pointers,structures using pointers etc
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Overloaded but not inherated
In operator overloading Which can be overloaded but cannot be inherated?
gunturi.prabhakar
- May 30th, 2008
I thnk it is an '=' operator...any way check this once with your programming skills.
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How would you obtain segment and offset addresses from a far address of a memory location?
bharadwaj.ece
- May 29th, 2008
Pointers to far objects are stored using four bytes (32 bits). The bytes are stored little endian or low to high order. The first word contains the 14-bit memory offset (bits 14 and 15 are always 0). ...
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Write any small program that will compile in "C" but not in "C++"
Rajnikant_Jachak
- May 15th, 2008
Typedef enum {read,blue,green}color; void main() { color a = 1; // Error in C++}
vipin gupta
- Aug 3rd, 2007
The following program compiles with 'C' with a warning about return type of main. But it wouldn't compile with 'C++', it gives error there:void main(){return;}
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Why C?
Why C considered as a High Level language? In C we are using pointers to access memory ,hence why HLL?
asif.aaag
- May 10th, 2008
because C is very simple to learn, easy to use and its reliable thats y most of them opt for C.And C is base for every language you learn...That is C++ and java's foundation is C...It is like a foundation of a building over which other floors are built
soniagulati
- Feb 13th, 2008
Actually, C is Middle Level Language, not High Level Language because the extent its higher than a Low Level Language is same upto the extent its lower than High Level Language.
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