How to Create an Overloaded Function in C++
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How to Create an Overloaded Function in C++

In C++, there is the option that can overload a function. It is essentially an item that works with multiple data types but have the same function name. The difficulty of setting it up is not too difficult. In fact, as long as you know how to work with functions, there should be no problems whatsoever in getting the job done right.


Overloaded function is a technique that is used to have almost the same name but a different data type being utilized.  The alternate method to consider using so that it could save lines of code is known as the function template.  For this purpose, it is going to be showing a program that is going to be utilizing the overloaded function.  Do keep in mind that it is not going to be a syntax error and can be a method to use to write your C++ programs but it is up to you.


#1: An effective program that can be used for the purpose of writing C++ programs.

#2: Knowing how to create functions is going to be necessary.

#3: Have an understanding of different data types.

#4: Including the libraries needed for it to work is necessary.



#1: It will be much easier to just create the functions before the main one.

#2: Remember, for functions that are not void; be sure to return a value.

#3: If using the same data type for an identical, it needs to be different.  Example: If there are two items stored, make it three.

#4: For this purpose, it is going to be using some calculations.  Be sure to know the area of a rectangle and area of a circle as well.

Writing the program

#1: Open up Visual C++ as the program of choice.  If you have Visual Studio, that will work just as well since it allows users to write C++ code.

#2: Create an empty project.  Give it any name that you want it to be.  Use the Win32 Console Application.  Give it time and it will create it.

#3: Next stage is to create a source file.  Only one file is going to be needed for this lesson in C++.

#4: Write the program out completely.  To get a better view, look at the screen shot below.  If you need to get a better view of it, right click and view it.

This is the overloaded function and the way it can be set up.  Notice the function name but also how it is being set up.

#5: Double check the entire code.  Make sure that there are going to be no major or minor errors.  That means go through it from top to bottom.

#6: Build the entire program completely.  Give it time to check over the code.  If everything is done correctly, disregard the next step and proceed to the final one.  If there is an error, go to the next step and correct it immediately.

#7: Any errors that are shown need to be corrected.  It could be spelling or it could be just the wrong syntax.  In any event, correct them all and then go back two steps and repeat the process.

#8: Run the program completely and see how it all works.  It is just an example of how it works out with it being an overloaded function.  It can be the method to use first.


The process of creating an overloaded function is not too difficult whatsoever.  It is not going to cause syntax errors as long as there are no duplicate functions in general.  They are just an item that can be used as part of the learning process in C++.

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