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  1. %{
  2. #include <stdio.h>
  3.  
  4.  
  5. int yywrap(void) {
  6.     return 1;  // Return 1 to indicate end of input
  7. }
  8.  
  9. %}
  10.  
  11. int_const    [0-9]+
  12. float_const  [0-9]+\.[0-9]+
  13.  
  14. %%
  15.  
  16. {int_const}    { printf("Valid Integer Constant: %s\n", yytext); }
  17. {float_const}  { printf("Valid Floating-point Constant: %s\n", yytext); }
  18. .\n            { /* Ignore other characters */ }
  19.  
  20. %%
  21.  
  22. int main() {
  23.     yylex();
  24.     return 0;
  25. }
Success #stdin #stdout #stderr 0.03s 6916KB
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stdin
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Standard input is empty
stdout
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Standard output is empty
stderr
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ERROR: /home/meLdDD/prog:25:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/Jf2Cl8
language:
Prolog (swi 7.6.4)
created:
1 day ago
visibility:
public

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