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Functions A function is a block of code which only runs when it is called. You can pass data, known as parameters, into a function. Functions are used to perform certain actions, and they are important for reusing code: Define the code once, and use it many times. Learn how to define, declare, call and use functions in C programming language. A function is a block of organized reusable code that performs a single related action and can return a value or not. The function returns the sum of a and b, which is then stored in the variable c. How to Pass Parameters to a Function There are two methods of passing parameters (also called arguments) to a function in C: by value and by reference. When we pass a parameter by value, the method receives a copy of the parameter's value. In this blog, you will learn about functions in C programming, including their definition, types, and how to use them to make your code more modular and efficient.
