Learn Pascal in Three Days

by Sam Abolrous

Overview

Learn Pascal in Three Days, Third Edition provides the novice programmer with the fundamentals of the language and is ideal for those wanting a solid foundation in structured programming. This update of one of the best-selling introductions to Pascal is designed for beginning programmers with its chapter summaries, review questions, hands-on examples, and easy-to-follow drills. Readers start with simple programs and end up with useful real-world applications. Among the topics covered are building and evaluating arithmetic expressions, using structures and loops, creating arrays, manipulating text data, writing procedures and functions to make programs more modular, and declaring and using pointers.

With this book, learn about the design of structured Pascal programs; problem-solving algorithms; simple and structured data types; variables, operators, and expressions; iteration, branching, and selection statements; pointers and linked lists; manipulating data files; real-life applications and solved drills.

Product Details

ISBN-13:	9781556228056
Publisher:	Jones & Bartlett Learning
Publication date:	09/25/2001
Edition description:	3E
Pages:	324
Product dimensions:	0.70(w) x 9.25(h) x 7.50(d)

About the Author

Programming Writer, Microsoft Corporation

Table of Contents

	Preface	v
	Acknowledgments	vi
	About the Author	vii
Chapter 1	Hello Pascal	1
1-1	Your First Pascal Program	1
	Comments	1
	Program Heading	2
	Syntax and Conventions	2
1-2	Displaying Text: Writeln, Write	3
1-3	Crunching Numbers	4
	Integers and Real Numbers	5
	Evaluation of Arithmetic Expressions	7
1-4	Using Variables	9
	Variable Declaration	9
	The Assignment Statement	10
1-5	Named Constants	12
1-6	Type Conversion: Round, Trunc	13
1-7	Reading from the Keyboard: Readln, Read	14
1-8	Formatting Output	15
	Summary	17
	Exercises	18
	Answers	18
Chapter 2	Language Elements	19
2-1	Standard Data Types and Functions	19
2-2	Numeric Data Types	19
	Numeric Types in Turbo Pascal	20
2-3	Standard Arithmetic Functions	21
	Example: The Power Function	23
	Example: Grocery Store	23
	Turbo Pascal Additional Functions	25
2-4	The Character Type: CHAR	26
	Standard Functions for Characters	27
	Strings in Standard Pascal	29
2-5	The String Type	30
	Declaration of a String	30
	The Length of a String	31
2-6	The Boolean Type	32
	Simple Boolean Expressions	32
	Compound Boolean Expressions	34
	Turbo Pascal Operators	35
	Precedence of Operators	35
	Summary	36
	Exercises	38
	Answers	38
Chapter 3	Decisions	39
3-1	Making Decisions	39
3-2	The Simple Decision: If-then	40
	Example: Pascal Credit Card	40
	Using Blocks	42
3-3	The If-then-else Construct	43
3-4	The Else-if Ladders	45
	Example: A Character Tester	46
3-5	Nested Conditions	47
	Example: Scores and Grades	47
	Tips on the If-Else Puzzles	50
3-6	The Multiple Choice: Case	51
	Example: A Vending Machine	51
	Example: Number of Days in a Month	52
3-7	Unconditional Branching: GOTO	54
	Repetition Loops	55
3-8	Turbo Pascal Features: Exit, Case-Else	56
	Summary	57
	Exercises	59
	Answers	60
Chapter 4	Loops	61
4-1	Looping	61
4-2	The For Loop	62
	Example: Powers of Two	64
	Example: The Average	65
4-3	Stepping Up and Stepping Down	66
	Example: The Factorial	67
4-4	Nested Loops	68
4-5	The While Loop	69
4-6	The Repeat Loop	72
	Summary	74
	Exercises	75
	Answers	76
Chapter 5	Data Architecture	77
5-1	Ordinal Data Types	77
	Enumerations	77
	Subranges	79
5-2	The TYPE Section	81
	Renaming Types	81
	Naming User-Defined Types	82
5-3	Arrays as Data Structures	83
5-4	One-Dimensional Arrays	85
	Example: Scores of One Student	85
	Displaying Tabulated Results	87
	Declaration of Arrays in the TYPE Section	90
	Example: Sorting an Array	90
5-5	Two-Dimensional Arrays	93
	Example: Scores of Students	94
	Array Initialization	96
	Summary	97
	Exercises	98
	Answers	99
Chapter 6	Text Processing	101
6-1	Manipulating Text Data	101
6-2	Tips on OUTPUT Statements	101
6-3	Tips on INPUT Statements	102
	Using READLN for Numeric Input	102
	Using READ for Numeric Input	104
	Using READ for Character Input	105
	Using READLN for Character Input	107
	Input of Mixed Types	108
	Example: Scrambling Letters	109
6-4	Reading a Line of Text: EOLN	111
	Example: Character Counter	111
6-5	Reading a File of Text: EOF	112
	Example: Frequency Counter	112
6-6	String Manipulation	113
	Tips on String Input/Output	113
	Example: Sorting Names	114
6-7	String Functions and Procedures	116
	LENGTH	116
	CONCAT	117
	COPY	117
	POS	117
	DELETE	117
	INSERT	118
	Summary	119
	Exercises	119
	Answers	120
Chapter 7	Program Architecture	121
7-1	Programs and Subprograms	121
7-2	Procedures	121
	Procedure Definition	122
	Passing Values to Procedures	123
	Passing Back Values from Procedures	126
7-3	Global and Local Variables	127
	Example: Sorting Procedure	127
7-4	Functions	130
7-5	Tips on the Scope of Variables	131
7-6	Recursion	133
	Summary	134
	Exercises	134
	Answers	135
Chapter 8	Sets and Records	137
8-1	Sets	137
8-2	Set Declaration and Assignment	138
	Rules and Restrictions	139
8-3	Set Operators and Operations	140
	Union	140
	Intersection	140
	Difference	140
	Tips on Using Set Operators	140
	Relational Operators	141
	Example: Text Analyzer	142
8-4	Records	144
	Record Declaration	144
	Accessing Fields	145
	The WITH Statement	146
8-5	Nesting Records	149
	Summary	151
	Exercises	152
	Answers	153
Chapter 9	Files and Applications	155
9-1	Data Files	155
9-2	TEXT Files	156
9-3	Reading a TEXT File	156
	File Variables	156
	File Parameters	157
	Opening a File for Input: RESET	157
	Closing the File	158
	File Input Procedures: READ, READLN	158
	The EOF and EOLN Functions	159
	Example: Disk-File Text Analyzer	159
9-4	Displaying a TEXT File	162
	Reading a TEXT File as a Set of Strings	163
	Reading Multiple Strings	164
9-5	Creating a TEXT File: REWRITE	165
	File Output Procedures: WRITE, WRITELN	165
	Example: Employee File	166
	Example: Payroll	168
9-6	Non-TEXT Files	172
	Example: Payroll System	173
	Appending a File	176
9-7	Using the File Buffer Variable	178
	Summary	179
	Exercises	180
	Answers	181
Chapter 10	Using Variant Records	183
10-1	Variant Records	183
10-2	Example: Enhanced Payroll System	185
10-3	Deleting Records from the File	192
10-4	Updating Records	201
10-5	Enhance the Program Modularity	204
	Suggestions	214
	Summary	214
	Exercises	215
	Answers	215
Chapter 11	Pointers and Linked Lists	217
11-1	Dynamic Memory Allocation	217
11-2	Pointers	217
	Pointer Operations	220
	Pointers to Records	222
	Passing Pointers as Parameters	224
11-3	Basics of Linked Lists	225
	List Declaration	225
	Building a List	225
	Reading a List	227
	Example: A Linked List Demo	229
	Storing Lists in Files	232
	Reading Lists from Files	233
	Example: A List of Records	234
11-4	Searching Lists	235
11-5	Deleting Nodes from Lists	243
	Summary	253
	Exercises	254
	Answers	255
	The Next Step	256
Appendix A	The ASCII Character Set	257
Appendix B	Reserved Words and Standard Identifiers	261
Appendix C	Answers to Drills	265
	Index	317