fork download 
  1. #include  <stdio.h>
  2.  
  3. #ifdef DEBUG
  4. #define CHECK(expr) foo(expr)
  5. #else
  6. #define CHECK(expr) (void)(expr)
  7. #endif /* DEBUG */
  8.  
  9. int bar (int x, int y, int z)
  10. {
  11.     //do nothing
  12.     return 0;
  13. }
  14.  
  15. int main(void)
  16. {
  17.     int a= 0, b = 0, c = 0;
  18.     int x = bar(a, b, c); /* bar has to be called for both DEBUG begin defined and undefined */ 
  19.     CHECK(x);
  20.     printf("Hello, world!\n");
  21.     return 0;
  22. }
  23.  
Success #stdin #stdout 0s 2112KB
comments (?)
stdin 
Standard input is empty
stdout 
Hello, world!
https://ideone.com/RtMxV5
language:
C99 (gcc 8.3)
created:
9 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!