HP OpenVMS Systems

BASIC
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Compaq BASIC for OpenVMS
Alpha and VAX Systems
Reference Manual
Begin Index
Contents (summary)
Preface Preface
Chapter 1 Program Elements and Structure
Chapter 2 VAX BASIC Environment Commands
Chapter 3 Compiler Directives
Chapter 4 Statements and Functions
Appendix A ASCII Character Codes
Appendix B BASIC Keywords
Appendix C Differences Between Alpha BASIC and VAX BASIC
  Index
  Figures
  Examples
  Tables

Contents

Preface
Preface Preface
Chapter 1
1 Program Elements and Structure
     1.1     Components of Program Lines
         1.1.1         Line Numbers
             1.1.1.1             Programs with Line Numbers
             1.1.1.2             Programs Without Line Numbers
         1.1.2         Labels
         1.1.3         Statements
             1.1.3.1             Keywords
             1.1.3.2             Single-Statement Lines and Continued Statements
             1.1.3.3             Multistatement Lines
         1.1.4         Compiler Directives
     1.2     BASIC Character Set
     1.3     BASIC Data Types
         1.3.1         Implicit Data Typing
         1.3.2         Explicit Data Typing
         1.3.3         QUAD and IEEE Floating-Point Data Types
     1.4     Variables
         1.4.1         Variable Names
         1.4.2         Implicitly Declared Variables
         1.4.3         Explicitly Declared Variables
         1.4.4         Subscripted Variables and Arrays
         1.4.5         Initialization of Variables
     1.5     Constants
         1.5.1         Numeric Constants
             1.5.1.1             Floating-Point Constants
             1.5.1.2             Integer Constants
             1.5.1.3             Packed Decimal Constants
         1.5.2         String Constants
         1.5.3         Named Constants
             1.5.3.1             Naming Constants Within a Program Unit
             1.5.3.2             Naming Constants External to a Program Unit
         1.5.4         Explicit Literal Notation
         1.5.5         Predefined Constants
     1.6     Expressions
         1.6.1         Numeric Expressions
             1.6.1.1             Floating-Point and Integer Promotion Rules
             1.6.1.2             DECIMAL Promotion Rules
         1.6.2         String Expressions
         1.6.3         Conditional Expressions
             1.6.3.1             Numeric Relational Expressions
             1.6.3.2             String Relational Expressions
             1.6.3.3             Logical Expressions
         1.6.4         Evaluating Expressions
     1.7     Program Documentation
         1.7.1         Comment Fields
         1.7.2         REM Statements
Chapter 2
2 VAX BASIC Environment Commands
    Command 1     ! Your-comment
    Command 2     $ System-command
    Command 3     APPEND
    Command 4     ASSIGN
    Command 5     COMPILE
    Command 6     CONTINUE
    Command 7     DELETE
    Command 8     EDIT
    Command 9     EXIT
    Command 10     HELP
    Command 11     IDENTIFY
    Command 12     INQUIRE
    Command 13     LIST and LISTNH
    Command 14     LOAD
    Command 15     LOCK
    Command 16     NEW
    Command 17     OLD
    Command 18     RENAME
    Command 19     REPLACE
    Command 20     RESEQUENCE
    Command 21     RUN and RUNNH
    Command 22     SAVE
    Command 23     SCALE
    Command 24     SCRATCH
    Command 25     SEQUENCE
    Command 26     SET
    Command 27     SHOW
    Command 28     UNSAVE
Chapter 3
3 Compiler Directives
    Command 29     %ABORT
    Command 30     %CROSS
    Command 31     %DECLARED
    Command 32     %DEFINE
    Command 33     %IDENT
    Command 34     %IF-%THEN-%ELSE-%END %IF
    Command 35     %INCLUDE
    Command 36     %LET
    Command 37     %LIST
    Command 38     %NOCROSS
    Command 39     %NOLIST
    Command 40     %PAGE
    Command 41     %PRINT
    Command 42     %REPORT
    Command 43     %SBTTL
    Command 44     %TITLE
    Command 45     %UNDEFINE
    Command 46     %VARIANT
Chapter 4
4 Statements and Functions
    Command 47     ABS
    Command 48     ABS%
    Command 49     ASCII
    Command 50     ATN
    Command 51     BUFSIZ
    Command 52     CALL
    Command 53     CAUSE ERROR
    Command 54     CCPOS
    Command 55     CHAIN
    Command 56     CHANGE
    Command 57     CHR$
    Command 58     CLOSE
    Command 59     COMMON
    Command 60     COMP%
    Command 61     CONTINUE
    Command 62     COS
    Command 63     CTRLC
    Command 64     CVT$$
    Command 65     CVTxx
    Command 66     DATA
    Command 67     DATE$
    Command 68     DATE4$
    Command 69     DECIMAL
    Command 70     DECLARE
    Command 71     DEF
    Command 72     DEF*
    Command 73     DELETE
    Command 74     DET
    Command 75     DIF$
    Command 76     DIMENSION
    Command 77     ECHO
    Command 78     EDIT$
    Command 79     END
    Command 80     ERL
    Command 81     ERN$
    Command 82     ERR
    Command 83     ERT$
    Command 84     EXIT
    Command 85     EXP
    Command 86     EXTERNAL
    Command 87     FIELD
    Command 88     FIND
    Command 89     FIX
    Command 90     FNEND
    Command 91     FNEXIT
    Command 92     FOR
    Command 93     FORMAT$
    Command 94     FREE
    Command 95     FSP$
    Command 96     FUNCTION
    Command 97     FUNCTIONEND
    Command 98     FUNCTIONEXIT
    Command 99     GET
    Command 100     GETRFA
    Command 101     GOSUB
    Command 102     GOTO
    Command 103     HANDLER
    Command 104     IF
    Command 105     INKEY$
    Command 106     INPUT
    Command 107     INPUT LINE
    Command 108     INSTR
    Command 109     INT
    Command 110     INTEGER
    Command 111     ITERATE
    Command 112     KILL
    Command 113     LBOUND
    Command 114     LEFT$
    Command 115     LEN
    Command 116     LET
    Command 117     LINPUT
    Command 118     LOC
    Command 119     LOG
    Command 120     LOG10
    Command 121     LSET
    Command 122     MAG
    Command 123     MAGTAPE
    Command 124     MAP
    Command 125     MAP DYNAMIC
    Command 126     MAR
    Command 127     MARGIN
    Command 128     MAT
    Command 129     MAT INPUT
    Command 130     MAT LINPUT
    Command 131     MAT PRINT
    Command 132     MAT READ
    Command 133     MAX
    Command 134     MID$
    Command 135     MIN
    Command 136     MOD
    Command 137     MOVE
    Command 138     NAME...AS
    Command 139     NEXT
    Command 140     NOECHO
    Command 141     NOMARGIN
    Command 142     NUM
    Command 143     NUM2
    Command 144     NUM$
    Command 145     NUM1$
    Command 146     ON ERROR GO BACK
    Command 147     ON ERROR GOTO
    Command 148     ON ERROR GOTO 0
    Command 149     ON...GOSUB
    Command 150     ON...GOTO
    Command 151     OPEN
    Command 152     OPTION
    Command 153     PLACE$
    Command 154     POS
    Command 155     PRINT
    Command 156     PRINT USING
    Command 157     PROD$
    Command 158     PROGRAM
    Command 159     PUT
    Command 160     QUO$
    Command 161     RAD$
    Command 162     RANDOMIZE
    Command 163     RCTRLC
    Command 164     RCTRLO
    Command 165     READ
    Command 166     REAL
    Command 167     RECORD
    Command 168     RECOUNT
    Command 169     REM
    Command 170     REMAP
    Command 171     RESET
    Command 172     RESTORE
    Command 173     RESUME
    Command 174     RETRY
    Command 175     RETURN
    Command 176     RIGHT$
    Command 177     RMSSTATUS
    Command 178     RND
    Command 179     RSET
    Command 180     SCRATCH
    Command 181     SEG$
    Command 182     SELECT
    Command 183     SET PROMPT
    Command 184     SGN
    Command 185     SIN
    Command 186     SLEEP
    Command 187     SPACE$
    Command 188     SQR
    Command 189     STATUS
    Command 190     STOP
    Command 191     STR$
    Command 192     STRING$
    Command 193     SUB
    Command 194     SUBEND
    Command 195     SUBEXIT
    Command 196     SUM$
    Command 197     SWAP%
    Command 198     TAB
    Command 199     TAN
    Command 200     TIME
    Command 201     TIME$
    Command 202     TRM$
    Command 203     UBOUND
    Command 204     UNLESS
    Command 205     UNLOCK
    Command 206     UNTIL
    Command 207     UPDATE
    Command 208     VAL
    Command 209     VAL%
    Command 210     VMSSTATUS
    Command 211     WAIT
    Command 212     WHEN ERROR
    Command 213     WHILE
    Command 214     XLATE$

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