C Programming Unit 3 End Questions

What is the purpose of the main function in a C program?

Which part is mandatory in a function heading?

What does a compound statement in a function comprise?

In C programming, what are symbolic constants used for?

What is the significance of having braces in a C function?

Why is it necessary to have one function called main in a C program?

What do some library functions do in a programming language?

Which of the following is not a common type of library function in C?

Why are some features of library functions considered computer-dependent?

In which form are similar library functions typically grouped together?

What is a common task performed by library functions for characters in programming languages?

Which of the following is NOT typically included in standard C compiler library functions?

What is the purpose of placing important data items as global in a multi-function program?

In which layer does modularization occur using functions according to the text?

What is a characteristic of object-oriented programming based on the text?

Why is data hiding concept important in large programs according to the text?

What differentiates procedural programming from object-oriented programming based on the text?

What is one of the primary advantages of using functions in a program?

Every function must contain:
- A function heading with a function name and optional list of arguments in parentheses.
- A list of argument declarations if arguments are included in the heading.
- A compound statement, which comprises the remainder of the function.
Compound statements are enclosed within a pair of braces, i.e., { }.
The braces may contain one or more elementary statements (called expression statements) and other compound statements.

Instructions of a program are divided into groups known as functions.
In multi-function programs, important data items are placed as global so that they may be accessed by all the functions.
Each function may have its own local data.

Modularization is used with the help of functions in large programs.
In object-oriented programming, large programs are divided into smaller programs known as functions called objects.
Data hiding concept is provided using functions.

Procedural programming focuses on the procedures that programmers create along with modularization.
Object-oriented programming focuses on objects, or ‘‘things,’’ and describes their features (also called attributes) and behaviors.

Library functions are not a part of the language per se, though all implementations of the language include them.
Features which tend to be computer-dependent are generally written as library functions.
Examples of library functions include standard input/output operations, operations on characters, operations on strings, and mathematical calculations.
Library functions that are functionally similar are usually grouped together as (compiled) object programs in separate library files.
These library files are supplied as a part of each C compiler.