Functions In C Language

In the C programming language, a function is a block of code that performs a specific task. Functions are used to break up large programs into smaller, more manageable pieces, and to make the code more reusable. Functions can be defined by the programmer or they can be part of the standard library. Functions can take zero or more arguments and can return a value or not. The syntax for defining a function in C is as follows:

Copy code

return_type function_name(parameter1_type parameter1, parameter2_type parameter2, ...) {    // function body }

For example, a function named "add" that takes two integer arguments and returns their sum might be defined as follows:

Copy code

int add(int a, int b) {    return a + b; }

and you can call this function by using the function name and passing the arguments to the function

Copy code

int result = add(2, 3); //result = 5

Additionally, C allows the use of function pointers, which are pointers that point to a specific function. This allows functions to be passed as arguments to other functions or stored in data structures for later use.