Docsity
Log inSign up
Docsity
Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity

Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan

Guidelines and tips
Guidelines and tips
Sell on Docsity
Sell on Docsity
Log inSign up

Prepare for your exams

Study with the several resources on Docsity

Find documents

Prepare for your exams with the study notes shared by other students like you on Docsity

Search Store documents

The best documents sold by students who completed their studies

Search through all study resources
Docsity AINEW

Summarize your documents, ask them questions, convert them into quizzes and concept maps

Explore questions

Clear up your doubts by reading the answers to questions asked by your fellow students

Earn points to download

Earn points by helping other students or get them with a premium plan

Share documents
download point icon20 Points

For each uploaded document

Answer questions
download point icon5 Points

For each given answer (max 1 per day)

All the ways to get free points
Get points immediately

Choose a premium plan with all the points you need

Study Opportunities

Choose your next study program

Get in touch with the best universities in the world. Search through thousands of universities and official partners

Community

Ask the community

Ask the community for help and clear up your study doubts

University Rankings

Discover the best universities in your country according to Docsity users

Free resources

Our save-the-student-ebooks!

Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors

From our blog

Exams and Study
Go to the blog

Functions Part 1-Fundamentals of Computer-Lecture Slides, Slides of Computer Fundamentals

Jaipur National UniversityComputer Fundamentals

The course covers important and advance elements of C and C plus plus programming language. This course provides the student with the skills required to design, code, and test and execute programs of simple to intermediate complexity. It includes: Modules, Math, Library, Functions, Prototypes, Header, Files, Calling, Random, Number, Generation

Typology: Slides

2011/2012

Uploaded on 07/31/2012

karthik
karthik 🇮🇳

4.6

(16)

95 documents

1 / 14

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
.
Chapter 5 - Functions
Outline
5.1 Introduction
5.2 Program Modules in C
5.3 Math Library Functions
5.4 Functions
5.5 Function Definitions
5.6 Function Prototypes
5.7 Header Files
5.8 Calling Functions: Call by Value and Call by Reference
5.9 Random Number Generation
5.10 Example: A Game of Chance
5.11 Storage Classes
5.12 Scope Rules
5.13 Recursion
5.14 Example Using Recursion: The Fibonacci Series
5.15 Recursion vs. Iteration
docsity.com
pf3
pf4
pf5
pf8
pf9
pfa
pfd
pfe

Partial preview of the text

Download Functions Part 1-Fundamentals of Computer-Lecture Slides and more Slides Computer Fundamentals in PDF only on Docsity!

.

Chapter 5 - Functions

Outline 5.1 Introduction 5.2 Program Modules in C 5.3 Math Library Functions 5.4 Functions 5.5 Function Definitions 5.6 Function Prototypes 5.7 Header Files 5.8 Calling Functions: Call by Value and Call by Reference 5.9 Random Number Generation 5.10 Example: A Game of Chance 5.11 Storage Classes 5.12 Scope Rules 5.13 Recursion 5.14 Example Using Recursion: The Fibonacci Series 5.15 Recursion vs. Iteration

.

Objectives

  • In this chapter, you will learn:
    • To understand how to construct programs modularly

from small pieces called functions..

  • To introduce the common math functions available in

the C standard library.

  • To be able to create new functions.
  • To understand the mechanisms used to pass information

between functions.

  • To introduce simulation techniques using random

number generation.

  • To understand how to write and use functions that call

themselves.

.

5.2 Program Modules in C

  • Functions
    • Modules in C
    • Programs combine user-defined functions with library functions
      • C standard library has a wide variety of functions
  • Function calls
    • Invoking functions
      • Provide function name and arguments (data)
      • Function performs operations or manipulations
      • Function returns results
  • Function call analogy:
  • Boss asks worker to complete task
  • Worker gets information, does task, returns result

.

5.2 Program Modules in C

Fig. 5.1 Hierarchical boss function/worker function relationship.

main

Worker 1 Worker 2^ Worker 3

Worker 4 Worker 5

.

5.3 Math Library Functions

.

5.4 Functions

  • Functions
    • Modularize a program
    • All variables defined inside functions are local variables
      • Known only in function defined
    • Parameters
      • Communicate information between functions
      • Local variables
  • Benefits of functions
    • Divide and conquer
      • Manageable program development
    • Software reusability
      • Use existing functions as building blocks for new programs
      • Abstraction - hide internal details (library functions)
    • Avoid code repetition

.

5.5 Function Definitions

  • Function definition format (continued)

return-value-type function-name( parameter-list ) { declarations and statements }

  • Definitions and statements: function body (block)
    • Variables can be defined inside blocks (can be nested)
    • Functions can not be defined inside other functions
  • Returning control
    • If nothing returned
      • return;
      • or, until reaches right brace
    • If something returned
      • return expression ;

Outline

.

fig05_03.c (Part 1 of 2)

Outline

.

fig05_04.c (Part 1 of 2)

Outline

.

fig05_04.c (Part 2 of 2)

Program Output

Enter three integers: 22 85 17 Maximum is: 85 Enter three integers: 85 22 17 Maximum is: 85 Enter three integers: 22 17 85 Maximum is: 85