C Programming Unit 3 End Questions

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Questions and Answers

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

To provide argument declarations

To start the program execution (correct)

To access other functions

To define other functions

Which part is mandatory in a function heading?

Function name (correct)

List of arguments

Compound statement

Argument declarations

What does a compound statement in a function comprise?

List of arguments

Elementary statements (correct)

Function name

Braces

In C programming, what are symbolic constants used for?

Representing information being passed between functions Signup and view all the answers

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

To enclose compound statements Signup and view all the answers

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

To begin program execution Signup and view all the answers

What do some library functions do in a programming language?

All of the above Signup and view all the answers

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

Functions that perform sorting operations Signup and view all the answers

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

Due to their reliance on specific hardware or software configurations Signup and view all the answers

In which form are similar library functions typically grouped together?

As object programs in separate library files Signup and view all the answers

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

Converting from lowercase to uppercase Signup and view all the answers

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

Sorting algorithms Signup and view all the answers

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

To allow access to the data items by all functions Signup and view all the answers

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

Fifth layer Signup and view all the answers

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

Focuses on objects and their attributes and behaviors Signup and view all the answers

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

To simplify identifying which function uses which data Signup and view all the answers

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

Procedural programming focuses on actions carried out, while object-oriented programming focuses on objects and their features Signup and view all the answers

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

Functions allow for better organization and reusability of code Signup and view all the answers

Study Notes

Program Characteristics

A program should be written in a generalized manner.
Program structure consists of one or more modules called functions.
One of the functions must be called main.

Program Structure

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.

Functions

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

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 and Object-Oriented Programming

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

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.

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Description

Test your understanding of C programming concepts with questions related to program characteristics, evolution of programming models, program execution, and understanding IDE and TurboC functions. This quiz covers topics like program structure, data types, expressions, and symbolic constants in C language.