• We can divide a large program into basic building blocks called functions.
• Functions contains a set of programming statements that is enclosed within {} paranthesis.
• A function is a set of code that performs specific task.
• A collection of number of functions is known as a program.
• Functions helps to avoid repeat useage of code.
• Functions can be called from any place in our program any number of times.
• Functions make code readable and simple.
• Functions are also called as procedures or subroutines in other programming Languages.

How Functions Works in C Langauage