iX Computer Systems - Edition 1 (32715-90001)

3- 1

Chapter 3 Language Elements

Introduction

This chapter describes elements of the HP Business BASIC/XL language.

It covers executable input, statements, variables, operators, and sub-

units.

Executable Input Units

An executable input unit can be input and executed without being part of

a larger structure. The following are the three executable input units

in HP Business BASIC/XL:

* Expressions.

* Commands.

* Programs.

Table 3-1 compares them.

Table 3-1. Executable Input Units

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| Executable Input | Composed of | For More Information |

| Units |||

|| | |

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| Expression | Operands and operator, or function | On expressions in general: |

| | and arguments. Operands and | Chapter 3. |

| | arguments are variables or | |

| | expressions. | On executing expressions: |

| | | "Calculator Mode" in Chapter 2. |

|| | |

| | | On variables: Chapter 3. |

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| Command | Most statement elements, except | On commands in general: Chapter |

| | line number and line label. | 3. |

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| Program | Numbered program lines (statements | On program lines in general: |

| | that are not commands). | Chapters 3 and 4. |

|| | |

| | | On program development and |

| | | execution: Chapter 2. |

|| | |

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Statements and Their Elements

This section contains the following information: