fork(7) download
copy 
  1. #define MACRO(abc, def) {#def ## #abc}
  2.  
  3. char result[10] = MACRO(abc, def);
  4.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
copy 
Standard input is empty
compilation info 
prog.cpp:3:33: error: pasting ""def"" and ""abc"" does not give a valid preprocessing token
 char result[10] = MACRO(abc, def);
                                 ^
prog.cpp:1:27: note: in definition of macro ‘MACRO’
 #define MACRO(abc, def) {#def ## #abc}
                           ^
stdout
copy 
Standard output is empty
https://ideone.com/noE2cd
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!