Chapter 6.2, Problem 6.4CP

Program Plan Intro

Function:

One of the building blocks of C++ program is functions; it contains a group of statements which are used to perform a specific task and the executable segments for a program.

• The function “main()” is the most important function in a program, because the “main()” function is the starting point of the program.
• The main advantage of using a function is that it reuses and reduces the code size of the program, because a function can be called for a multiple numbers of times.

Function call:

The statement which causes the function to execute is referred as function call.

• A function can be called by name of the function and the return type should not be specified before the function call.
• The function call statement should end with a semicolon.

Example for function call:

//Calling the function

display();

In the above example, the function call is made by calling its function name “display()” and the function call is terminated with the semicolon.