Function overloading is the general concept of c++. C does make it possible to write function with a variable number of argument, such as printf. Example: Function overloading in C++ In this article. In this situation, the functions that sharethe same name are said to be overloaded, and the process is referred to as function overloading 2. Overloaded functions enable you to supply different semantics for a function, depending on the types and number of arguments. Introduction to Overloading and Overriding in C++. Function overloading helps the application to load the class method based on the type of parameter. Function overloading 1. Function overloading speeds up the execution of our code. In Java, function overloading is also known as compile-time polymorphism and static polymorphism. In “C” language, the same function name is illegal to declare more than once. This is called function overloading. But c++ is benefited with this feature. C++ allows specification of more than one function of the same name in the same scope. These functions are called overloaded functions. Depending on different data types the same function can be used to perform a similar set of operations. Function Overloading. This is typically done by "mangling" the name of a function, and thus including the types of its arguments in the symbol definition. int myFunction(int x) float myFunction(float x) double myFunction(double x, double y) Consider the following example, which have two functions that add numbers of different type: Function overloading should not be confused with forms of polymorphism where the choice is made at runtime, e.g. Function overloading makes code re-usability easy, thus it also helps to save memory. This allows consistency in notation, which is good both for reading and for writing code. It allows the programmer to write functions to do conceptually the same thing on different types of data without changing the name. This is how actually function overloading feature works in the C++ programming language. Function overloading makes code maintenance easy. A function can be declared more than once with different operations. Overloading: The function name is the same but the parameters and returns type changes.Since we will get to know the difference between the overloaded functions during compile time, it is also called Compile time polymorphism. Function overloading is also a type of Static or Compile time Polymorphism. Each variant of an overloaded function will then obtain a different symbolic name for the entry point. Overloading is a form of polymorphism. some_function(5, 6, 7, NULL); some_function(5, 6, … Function overloading : A feature in C++ that enables several functions of the same name can be defined with different types of parameters or different number of parameters. Overloading Functions in C. It is well known that C++ allows one to overload functions, and C does not. With that being said, there is no reliable, cross-platform way in C to write a function that takes exactly 2 or 3 arguments; in general you must do something like. This feature is called function overloading. It is the compiler job which one is the right to choose. Function overloading is normally done when we have to perform one single operation with different number or types of arguments. With function overloading, multiple functions can have the same name with different parameters: Example. C++ programming code to show function overloading Function Overloading in C++. C++ Function Overloading - If a C++ class have multiple member functions, having the same name but different parameters (with a change in type, sequence or number), and programmers can use them to perform a similar form of operations, then it is known as function overloading. Example #3. In C++, two or more functions can sharethe same name as long as their parameter declarations are different. 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