Compaq BASIC for OpenVMS
Alpha and VAX Systems
User Manual

Chapter 6
6	Simple Input and Output
6.1	Program Input
6.1.1	Providing Input Interactively
6.1.1.1	INPUT Statement
6.1.1.2	INPUT LINE and LINPUT Statements
6.1.1.3	Enabling and Disabling the Question Mark Prompt
6.1.2	Providing Input from the Source Program
6.1.2.1	READ and DATA Statements
6.1.2.2	RESTORE Statement
6.2	Program Output
6.2.1	Print Zones---The Comma and the Semicolon
6.2.2	Output Format for Numbers and Strings
6.3	Terminal-Format Files
6.3.1	Opening and Closing a Terminal-Format File
6.3.2	Writing Records to a Terminal-Format File
Chapter 7
7	Arrays
7.1	Overview of Arrays
7.2	Creating Arrays Explicitly
7.2.1	Creating Arrays with the DECLARE Statement
7.2.2	Creating Arrays with the DIM Statement
7.2.2.1	Declarative DIM Statements
7.2.2.2	Executable DIM Statements
7.2.3	Creating Arrays with the COMMON Statement
7.2.4	Creating Arrays with the MAP Statement
7.3	Creating Arrays Implicitly
7.4	Determining the Bounds of an Array
7.5	Assigning and Displaying Array Values
7.5.1	Assigning Values with the LET Statement
7.5.2	Listing Array Elements with the PRINT Statement
7.6	Using MAT Statements
7.6.1	MAT Statement
7.6.2	MAT READ Statement
7.6.3	MAT INPUT [#] Statement
7.6.4	MAT LINPUT [#] Statement
7.6.5	MAT PRINT [#] Statement
7.6.6	Matrix I/O Functions (NUM and NUM2)
7.7	Matrix Operators
7.7.1	Arithmetic Matrix Operations
7.7.1.1	Assignment
7.7.1.2	Addition and Subtraction
7.7.1.3	Multiplication
7.7.2	Matrix Functions
7.7.2.1	TRN Function
7.7.2.2	INV Function
7.7.2.3	DET Function
Chapter 8
8	Data Definition
8.1	Declarative Statements
8.2	Data Types
8.3	Setting the Default Data Type and Size
8.4	Declaring Variables
8.5	Declaring Named Constants
8.6	Operations with Multiple Data Types
8.7	Allocating Dynamic and Static Storage
8.7.1	COMMON Statement
8.7.2	MAP Statement
8.7.2.1	Single Maps
8.7.2.2	Multiple Maps
8.7.3	FILL Items
8.7.4	Using COMMON and MAP Statements in Subprograms
8.7.5	Dynamic Mapping
Chapter 9
9	Creating and Using Data Structures
9.1	RECORD Statement
9.1.1	Grouping RECORD Components
9.1.2	RECORD Variants
9.1.3	Accessing RECORD Components
Chapter 10
10	Program Control
10.1	Statement Modifiers
10.1.1	IF Modifier
10.1.2	UNLESS Modifier
10.1.3	FOR Modifier
10.1.4	UNTIL Modifier
10.1.5	WHILE Modifier
10.1.6	Nesting Modifiers
10.2	Loops
10.2.1	FOR...NEXT Loops
10.2.2	WHILE...NEXT Loops
10.2.3	UNTIL...NEXT Loops
10.2.4	Nesting Loops
10.3	Unconditional Branching (GOTO Statement)
10.4	Conditional Branching
10.4.1	ON...GOTO...OTHERWISE Statement
10.4.2	IF...THEN...ELSE Statement
10.4.3	SELECT...CASE Statement
10.5	EXIT and ITERATE Statements
10.6	Executing Local Subroutines
10.6.1	GOSUB and RETURN Statements
10.6.2	ON...GOSUB...OTHERWISE Statement
10.7	Suspending and Halting Program Execution
10.7.1	SLEEP Statement
10.7.2	WAIT Statement
10.7.3	STOP Statement
10.7.4	END Statement