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Chapter 1: Introduction to C Page

1.1 Introduction to Computers ,[object Object],Page Computer System Software Hardware The physical equipments. E.g. keyboard, mouse, monitor, processor, memory, etc. Collection of programs that tell hardware how to perform tasks.

1.1 Introduction to Computers ,[object Object],Page Computer System Software Hardware System Software Application Software Programs that manage computer resources. Programs that help users to solve their problems.

1.1 Introduction to Computers ,[object Object],Page Computer System Software Hardware System Software Application Software Operating System System Support Software System Development Software General-Purpose Software Application-Specific Software

Example of system software: ,[object Object],[object Object],[object Object],[object Object],Page Operating System System Support Software System Development Software

Example of application software: ,[object Object],[object Object],Page General-Purpose Software Application-Specific Software

1.2 Computer Languages ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Page

Evolution of computer languages: Page

Program in machine language: Page

Machine Language ,[object Object],[object Object],[object Object],[object Object],Page 10010010 00110101 10101110

Program in symbolic language: Page

Symbolic Language ,[object Object],[object Object],[object Object],[object Object],[object Object],Page

Wait a minute… ,[object Object],Page ?

Translate it!!! ,[object Object],Page Source Program Translator 10001011 11001101 00110011 Machine Language

Assembler ,[object Object],[object Object],Page Symbolic Language Machine Language Assembler Source Program Translator 0s and 1s

Example of high-level language: Page

High-Level Language ,[object Object],[object Object],[object Object],[object Object],[object Object],Page

Compiler / interpreter ,[object Object],[object Object],Page High-Level Language Machine Language Compiler / Interpreter Source Program Translator 0s and 1s

The Compilation Process ,[object Object],[object Object],[object Object],Page Compiler Object Program Results Program Error Listing Data Source Program Machine Language Translator

1.3 Introduction to C ,[object Object],[object Object],[object Object],Page

Exercise 1.1 ,[object Object],Page #include <stdio.h> int main(void) { printf("Hello World!"); return 0; }

Exercise 1.2 ,[object Object],Page Welcome, welcome all of you Glad you are with us Shake hands, no need to be blue Welcome to you!

1.4 Program Development ,[object Object],[object Object],[object Object],[object Object],[object Object],Page

[object Object],[object Object],Page An old programming proverb: Resist the temptation to code!!!

Program Development ,[object Object],[object Object],[object Object],Page Develop a solution Understand the problem Write the program Test the program

Program Development ,[object Object],[object Object],[object Object],[object Object],[object Object],Page Develop a solution Understand the problem Write the program Test the program We will talk about them later.

Program Development ,[object Object],[object Object],Page Develop a solution Understand the problem Write the program Test the program

Example 1.1 ,[object Object],[object Object],[object Object],Page

[object Object],Divide and Conquer!!! Page

Divide and Conquer!!! ,[object Object],Page

Tool: Structure Chart ,[object Object],[object Object],Page

Tool: Pseudocode ,[object Object],[object Object],Page

Tool: Flowchart ,[object Object],[object Object],Page

Flowchart Symbols Page Input/Output Processing Module Decision Flowlines Terminal Off-page Connector On-page Connector

Example 1.2 ,[object Object],[object Object],[object Object],[object Object],[object Object],Page

Example 1.2: Structure chart Page Sum Two Numbers Get User Input Calculate Sum Display Sum

Example 1.2: Pseudocode Page START Prompt and read number1 Prompt and read number2 sum = number1 + number2 Display sum END

Example 1.2: Flowchart Page START END Read number1 Read number2 sum = number1 + number2 Display sum

Exercise 1.3 ,[object Object],Page

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