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What is function overloading and operator overloading?


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Answered 2011-12-09 03:14:50

Overloading refers to use of something for different purposes.

Function Overloading - It refers to the design of family of functions with one function name but with different argument list. The correct function will be invoked by checking the number and type of the arguments.

Operator Overloading - The mechanism of giving the additional property to the operator is known as operator overloading. We can overload all the operators except the following:

1.)Class members access operators

2.)Scope resolution operator

3.)Sizeof operator

4.)Conditional operator

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What is the difference between operator overloading and function overloading in C?

Function overloading is multiple definition with different signatures(the parameters should be different) for the same function. The parameter list have to be different in each definition. The compiler will not accept if the return type alone is changed. Operator overloading is defining a function for a particular operator. The operator loading function can not be overloaded through function overloading.


Is it possible to do operator overloading in c?

No. Operator and/or function overloading is only a C++ thing.


What are the difference between function overloading and operator overloading?

Function overloading refers to using the same function name in the same scope with multiple versions depending on the parameters provided. Operator overloading is a specialized version of function overloading, and refers specifically to using operators instead of function names. These are usually designated with the keyword "operator". Function overloading: void doSomething(int arg1); void doSomething(int arg1, int arg2); Operator overloading: obj& operator +(obj arg1, obj arg2);


What is difference between friend function operator overloading and member function operator overloading?

While overloading operators using member function it takes only one arguments(other pass implicitly)... but in case of friend fuction two parameters are required..


Operator overloading is possible in java or not?

Operator overloading is not possible in Java.


Why you use operator overloading in c plus plus?

Operator overloadingThe mechanism of giving special meanings to an operator is known as operator overloading.It provides a flexible option for the creation of new definitions for most of the C++ operators. we can almost create a new language of our own by the creative use of the function and operator overloading techniques.


What is an operator overloading in C?

one function but multiple behaviours depending on the parameters


What is an operator overloading in java?

Operator overloading refers to redefining what the mathematical operators (+-*/) do when applied to different objects. Java does not support operator overloading.


Define operator overloading?

Operator overloading involving vector types is not supported.


Why do you use of operator overloading in c?

There is no operator overloading in C. This is only a C++ thing.


How is function overloading different from operator overloading?

There is no difference. Operator overloads should always be implemented with an equivalent function overload. That is, an operator overload should always call the appropriate function overload, thus giving the user the option of using the operator or the function. Indeed, aside from the relational operators (<, <=, ==, >, >= and !=) and assignment operator (=), operator overloads are not actually required unless they would allow consumers to use the object in a more intuitive way. If there is any ambiguity regarding the purpose of an operator, do not provide an operator at all -- use a function equivalent instead.


Why a friend function cannot be used to overload the assignment operator?

Assignment(=) operator is a special operator that will be provided by the constructor to the class when programmer has not provided(overloaded) as member of the class.(like copy constructor). When programmer is overloading = operator using friend function, two = operations will exists: 1) compiler is providing = operator 2) programmer is providing(overloading) = operator by friend function. Then simply ambiguity will be created and compiler will gives error. Its compilation error.


Definition of operator overloading inc plus plus?

to define an additional task to an operator ,we must specify what it means in relation to the class to which the operator is applied.this is done with the help of a special function called operator function ,which describes the task.


What is overloaded operator?

Java does not support operator overloading. Operator overloading is the scenario where you overload a particular operator to do something that it is not designed to do. Ex: if you make the operator "*" do addition or the operator "-" do multiplication, imagine the chaos that would ensue in your program. So the java designers blocked this feature of operator overloading.


How do you overload operator?

Java does not support operator overloading. Operator overloading is the scenario where you overload a particular operator to do something that it is not designed to do. Ex: if you make the operator "*" do addition or the operator "-" do multiplication, imagine the chaos that would ensue in your program. So the java designers blocked this feature of operator overloading.


C coding for operator overloading?

C does not support operator overloading. If you mean C++ operator overloading, it depends on exactly what you wanted to do. If you wanted to '+' to strings, then you could write: string operator+(string a, string b) { // do something }


What are the disadvantages of operator overloading in c plus plus?

What are the disadvantages of operator overloading in c plus plus?


Why operators not overloaded?

Java does not support operator overloading. Operator overloading is the scenario where you overload a particular operator to do something that it is not designed to do. Ex: if you make the operator "*" do addition or the operator "-" do multiplication, imagine the chaos that would ensue in your program. So the java designers blocked this feature of operator overloading.


What are the restriction that are applied to operator overloading?

Java does not support user defined operator overloading.The operator '+' is overloaded in Java and can be used for adding both numbers and Strings.


How operator overloading differ from function overloading?

Operator overloading means defining what the operators ie + - * / & | etc mean in terms of your object, by writing appropriate methods in the object's code. This is not permitted in java. Method overloading is using the same method name in methods with different paramters ie setSize(Dimension d) setSize(int height, int width)


What are factors to be considered while overloading the operators?

Java does not support operator Overloading.


What is assignment operator overloading?

There is no concept of operator overloading in java, at least it is not available to the developers. There are still instances of operator overloading as in the case of "+" operator. It is used both to perform arithmetic sum as well as concatenation of two strings. But one cannot impart additional functions to an existing operator as in the case of C++.


How do you overload function call and Array sub-scripting operators?

Overloading the "function call" operator, i.e. operator()(), can be achieved by defining a method with the following form:operator()() {}For example, here's how it would look in the simplest case (no argument or return value):class Callable {// ...public:voidoperator()() {// do something interesting}// ...};Overloading the array subscript operator, i.e. operator[](), is just as easy. This operator always takes a single argument (the subscript). Here's a template for a method which overloads this operator: operator[]( index) {}For example:class Subscriptable {// ...public:doubleoperator[](unsigned index) {// compute and return a double}// ...};


When an operator works on various type of operands is called?

operator overloading


Differentiate between overloading unary operator and overloading binary operator?

Unary operators declared as member function take NO arguments; if declared as global function, then take only one argument.Binary operators declared as member functions take one argument; if declared as global function, then would take two arguments.Note: The first argument for member function overloaded is always the class type; the class in which the operator is declared.