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.
Note:
In macro/define's use '##_' to escape line continuation character '_' to allow multiple lines of macro expanded code to be combined into a single statement.
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

Version

- Before fbc 1.08.0, '##_' did not allow to escape line continuation character '_'.

Differences from QB

- New to FreeBASIC

See also

- Preprocessor