Chapter 6

Functions are the building blocks of C programming and are central to C program design. They allow for the modular structure of programs by breaking up tasks into smaller, more manageable modules.

The advantages of using functions in C programming include modular structure, breaking up complex tasks into manageable modules, reusability of code, and easier debugging and maintenance.

The main() function is where the execution of the program begins. Other functions are executed when they are called directly or indirectly by main. It is mandatory to have a single main() function in every program.

The return keyword is used to return a value from a function. It terminates the function and passes the value back to the calling function.

Recursion in C programming refers to the process in which a function calls itself directly or indirectly. It is a powerful technique but should be used with caution to avoid infinite loops.

The two main types of control structures in 'C' are decision-making structures and loop control structures.

Decision-making structures alter the sequence of execution of statements based on certain conditions.

Loop control structures allow for the execution of statements to be repeated until some condition is met.

The chapter will cover various control structures and jump statements for altering the flow of execution.

Jump statements allow breaking out of the normal sequence of execution and altering the flow of control in a program.