Visual Basic 6 Programming: Business Applications with a Design Perspective

Table of Contents

Chapter 4 Data, Operations, and Built-In Functions

• 4.1 Classification and Declaration of Data
  • Declaring constants
  • Declaring Variables
  • Checking for Variable Declarations
  • Rules for Variable Declaration
• 4.2 Scope and Lifetime of Variables
  • Form Level Declaration
  • Procedure Level Declaration
  • Static Declaration
  • Scope and Lifetime: A Recap
  • Scope and Program Modularity
  • Constant and Variable Naming Convention
• 4.3 Numeric Data and Types
  • Byte and Boolean Types
  • Integer and Long Types
  • Single and Double Types
  • Other Numeric Data Types
  • Declaring Numeric Data Types
  • The Variant Data Type
  • A Bit of Number Systems
  • The Assignment Statement
  • Numeric Operations
  • Data Type Conversions
  • Computing Net Sale-An Application Example
  • The Format Function
• 4.4 Built-in Numeric Functions
  • Mathematical functions
  • Conversion functions
  • Date/Time functions
  • Using Functions
• 4.5 String Data
  • Declaring String Variables
  • String Operations and Built-In Functions
  • The Calculating Vending Machine-An example
• Summary
• Visual Basic Explorer
• Exercises
• Projects