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  1. %{
  2. #include <stdio.h>
  3. %}
  4.  
  5. %%
  6. ^[+-]?[0-9]+$                       { printf("Integer number\n"); }
  7. ^[+-]?[0-9]*\.[0-9]+([eE][+-]?[0-9]+)?$   { printf("Floating point number\n"); }
  8. .*                                  { printf("Not a number\n"); }
  9. %%
  10.  
  11. int main()
  12. {
  13.     printf("Enter input: ");
  14.     yylex();
  15.     return 0;
  16. }
  17.  
  18. int yywrap()
  19. {
  20.     return 1;
  21. }
  22.  
Success #stdin #stdout #stderr 0.02s 6844KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
stderr 
ERROR: /home/U3a9S4/prog:21:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/4iSKc2
language:
Prolog (swi 7.6.4)
created:
13 days ago
visibility:
public

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