Visual Basic Concepts

Introduction to Control Structures

Control structures allow you to control the flow of your program's execution. If left unchecked by control-flow statements, a program's logic will flow through statements from left to right, and top to bottom. While some very simple programs can be written with only this unidirectional flow, and while some flow can be controlled by using operators to regulate precedence of operations, most of the power and utility of any programming language comes from its ability to change statement order with structures and loops.

To learn more about specific control structures, see the following topics:

• Decision Structures   An introduction to decision structures used for branching.
• Loop Structures   An introduction to loop structures used to repeat processes.
• Working with Control Structures   The basics of working with control structures in your code.