Operator ## (Preprocessor Concatenate)
Preprocessor operator to concatenate strings
text##text
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.
Output:
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
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