Software Engineering and Testing

Chapter 16

FUNCTIONS IN VISUAL BASIC

F

unctions may be inbuilt or user-defined. We will discuss here only inbuilt

Visual Basic functions.

1. Asc ()

Returns an ASCII value of the first character in the string.

Example:

Expression Return Value

Result = Asc(“M”) 77

Result = Asc(“Mahesh”) 77

Result = Asc(“m”) 109

2. CBool ()

Converts its arguments to a Boolean function and returns False for a zero value

and True for all other values.

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Example:

Expression Return Value

Result = CBool (0) False

Result = CBool (1) ...