1. Chapter 1 Introduction to C Programming
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Chapter 1 Introduction to C Programming
DDC PENGATURCARAAN I (C)

2. 1.1 Introduction We will learn the C programming language
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1.1 Introduction
We will learn the C programming language
Learn structured programming and proper
programming techniques.
This course is appropriate for technically oriented people with little or no programming experience. Experienced programmers who want a deep and rigorous treatment of the language
DDC PENGATURCARAAN I (C)

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1.2 History of C C
Evolved by Ritchie from two previous. programming languages, BCPL and B
Used to develop UNIX.
Now, most operating systems written with C or C++.
Hardware independent (portable).
By late 1970's C had evolved to "Traditional C“.
Standard created in 1989, updated in 1999
DDC PENGATURCARAAN I (C)

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1.3 Identifiers
In C the names of variables, functions, labels and various others user defined items are called identifiers.
The length of these identifiers can vary from one to several character
The first character must be a letter or an underscore, and subsequent characters must be either letters, digits, or underscores.
Use meaningful identifiers
Be consistent
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5. 1.3.1 Correct and Incorrect Identifiers names
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1.3.1 Correct and Incorrect Identifiers names
Correct
Incorrect
count
1count
test123
Hi!there
High_balance
High…balance
Total_score
Total+score
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1.4 Basic Data Types
Data is information that maybe manipulated by computer
A binary digit, or a bit is the smallest item of data
Type
Size (bytes)
char 1
int
2 or 4
float 4
double 8
DDC PENGATURCARAAN I (C)

7. 10 a 1.5 Declaring Variables Declaration: REV00 int a = 10; Type Name
Value 10 a
Memory location
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1.6 Constants
Constant refer to fixed values that the program may not alter.
Constant can be any of the basic data types.
Declaration:
#define PI 3.142;
Keyword
Value
Name
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9. 1.7 Formatted Input/Output
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1.7 Formatted Input/Output
Standard Output with printf( )
Syntax:
printf ("Hello World!"); or
printf ("Number: %d", a);
Hello World!
output
Number: 10
output
DDC PENGATURCARAAN I (C)

10. 1.7 Formatted Input/Output
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1.7 Formatted Input/Output
Format specifiers:
printf ("Number: %d", a);
%d is a format specifier that indicates the data should be of type integer.
DDC PENGATURCARAAN I (C)

11. 1.7 Formatted Input/Output
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1.7 Formatted Input/Output
Standard Input with scanf( )
Syntax:
scanf ("%d", &a);
Input a
Memory location
DDC PENGATURCARAAN I (C)