C++ Function Practice Problems

Functions are the basic building block of the program. They are the block of code that performs a specific task. Function can be executed from anywhere in the program any number of times. They increase the modularity and reusability of the code.

Practicing problems is one of the most effective ways to improve programming fluency in any language. This article provides practice problems on C++ function for building a strong grasp of concepts such as function definition, return type and parameters, default values, recursion, etc.

• Function with No Arguments
• Function with Arguments
• Function with Return Value
• Sum with Default Arguments
• Print Alphabets
• Find Volume
• Factorial (Using Function)
• Fibonacci Number (Using Function)

Prerequisite

To solve the above problems, you must have the knowledge of the following topics:

• Data Types and Variables
• Operators
• Input and Output
• Control Statements and Loops
• Functions

If you have some confusion in these topics and want to revise them, refer to our C++ Tutorial.

How to solve practice problems?

Each of the above link will take you to the practice portal where the problem statement tells you all the required information about the problem, and you have to write the solution in the code editor.

Once your solution is complete, you can check it for example test case using the compile and run button at the bottom right of the page.

If you are sure of your solution, press the submit button. The GfG's compiler will run your solution for a variety of test cases and if all these cases are passed, you solution will be accepted.

Your own custom cases can also be checked before submission by using Custom Input button but keep in mind to follow the program's input layout.