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  1. %{
  2. #include<stdio.h>
  3. %}
  4.  
  5. %%
  6. [0-9]+ {printf("\n integer number recognised!");}
  7. [0-9]+[.] {digit}+ {printf("\n floating number recognised!");}
  8. .+ {printf("entered input is invalid");}
  9. %%
  10.  
  11. int main()
  12. {
  13. printf("\n enter input to recognise number ");
  14. yylex();
  15. }
  16.  
  17. int yywrap()
  18. {
  19. return 1;
  20. }
Success #stdin #stdout #stderr 0.02s 6820KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
stderr 
ERROR: /home/fXs9IV/prog:20:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/EbdrI7
language:
Prolog (swi 7.6.4)
created:
19 days ago
visibility:
public

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