Function Function : In C programming, a function is a self-contained block of code that performs a specific task or a set of related tasks. Functions are used to break down a program into smaller, more manageable pieces, making the code more organized, readable, and reusable. C supports various types of functions, including library functions and user-defined functions. Below, I'll describe functions in C with examples and discuss their types. Function Syntax: return_type function_name(parameters) {     // Function body     // Statements to perform a task     return value; // (optional) Return value } Here's a breakdown of the elements: - `return_type`: Specifies the data type of the value the function returns. Use `void` if the function doesn't return anything. - `function_name`: A unique identifier for the function. - `parameters`: Input values that the function can accept (optional). - `function_body`: Conta...