Operator ## (Preprocessor Concatenate)

FreeBASIC

Operator ## (Preprocessor Concatenate)
 
Preprocessor operator to concatenate strings

Syntax

text##text

Description

This operator creates a new token by concatenating the texts at both sides of it. This text can be recognized by other macros and further expanded. One use, is to create a macro that expands to different macro names, variable names, and function names depending on the arguments received.

Example

#define Concat(t,n) t##n

Print concat (12,34)

Dim Concat (hello,world) As Integer
Concat (hello,world)=99
Print helloworld

Output:
1234
99

Differences from QB

  • New to FreeBASIC

See also