What is function in c: In C programming

In C programming, functions can be grouped into two main categories: library functions and user-defined functions. Based on how they handle input and output, user-defined functions can be further classified into different types. A Function is a reusable block of code designed to perform a specific task. It helps break large programs into smaller, logical parts. Functions make code cleaner, easier to understand, and more maintainable. Just like in other languages, C++ functions can take inputs (called parameters), execute a block of statements, and optionally return a result. C++ also supports advanced features like function overloading, default arguments, and inline functions, which give more flexibility compared to C. This function in the C tutorial covers function definitions, function declaration and call, function arguments, variables, recursive and inline functions, and more. 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.