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Chapter 5
Data Types
CONTENTS
CONTENTSCONTENTS
CONTENTS
5.1 Constants.............................................................................................................. 63
5.1.1 Types of Constants......................................................................................63
[ 1 ] String Constants....................................................................................... 63
[ 2 ] Numeric Constants................................................................................... 63
5.2 Variables ............................................................................................................... 65
5.2.1 Types of Variables according to Format ...................................................... 65
[ 1 ] String Variables ........................................................................................ 65
[ 2 ] Numeric Variables ....................................................................................66
5.2.2 Classification of Variables ...........................................................................67
5.3 User-defined Functions.........................................................................................68
5.4 Type Conversion ................................................................................................... 69
5.4.1 Type Conversion ......................................................................................... 69
5.4.2 Type Conversion Examples......................................................................... 70
5.5 Scope of Variables ................................................................................................ 71
5.5.1 Global Variables .......................................................................................... 71
5.5.2 Local Variables............................................................................................73
5.5.3 Variables Not Declared to be Global or Local.............................................. 74
5.5.4 Common Variables ...................................................................................... 75
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