FBWiki: KeyPgOpSubtract

Operator - (Subtract)

Subtracts two expressions

Syntax:declare operator - ( byref lhs as byte, byref rhs as byte ) as byte declare operator - ( byref lhs as ubyte, byref rhs as ubyte ) as ubyte declare operator - ( byref lhs as short, byref rhs as short ) as short declare operator - ( byref lhs as ushort, byref rhs as ushort ) as ushort declare operator - ( byref lhs as integer, byref rhs as integer ) as integer declare operator - ( byref lhs as uinteger, byref rhs as uinteger ) as uinteger declare operator - ( byref lhs as longint, byref rhs as longint ) as longint declare operator - ( byref lhs as ulongint, byref rhs as ulongint ) as ulongint declare operator - ( byref lhs as single, byref rhs as single ) as single declare operator - ( byref lhs as double, byref rhs as double ) as double declare operator - ( byref lhs as T, byref rhs as T ) as integer declare operator - ( byref lhs as T, byref rhs as integer ) as T declare operator - ( byref lhs as integer, byref rhs as T ) as T
Usage:

result = lhs - rhs

Parameters:

lhs

The left-hand side expression to subtract from.

rhs

The right-hand side expression to subtract.

T

Any pointer type.

Return Value:

Returns the subtraction of two expressions.

Description:

When the left and right-hand side expressions are numeric values, Operator - (Subtract) returns the subtraction of the two values.

If either the left or right-hand side expressions is of Pointer type, Operator - (Subtract) performs pointer arithmetic on the address, returning the result.

Neither operand is modified in any way.

This operator can be overloaded to accept user-defined types.

Examples:

Dim n As Single
n = 4 - 5
Print n
Sleep

will produce the output:

-1

Dialect Differences:

In the -lang qb dialect, this operator cannot be overloaded.

Differences from QB:

None

See also:

Mathematical Functions

Back to Arithmetic Operators

Back to Operators

FBWiki : KeyPgOpSubtract

Operator - (Subtract)