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  1. %{
  2. #include <stdio.h>
  3. %}
  4.  
  5. %%
  6. int|float|if|else|return|while|for { printf("Keyword");}
  7. [a-zA-Z_]([a-zA-Z0-9_])* { printf("Identifier"); }
  8. [0-9]+ {     printf("Number"); }
  9. .|\n ; // Ignore other characters
  10. %%
  11.  
  12. int main() {
  13.     yylex();
  14.     return 0;
  15. }
  16. int yywrap()
  17. {
  18. }
Success #stdin #stdout #stderr 0.02s 6800KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
stderr 
ERROR: /home/9SDL9R/prog:18:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/YXkW8n
language:
Prolog (swi 7.6.4)
created:
6 days ago
visibility:
public

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