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  1. %{
  2. #include <stdio.h>
  3. %}
  4.  
  5. DIGIT [0-9]
  6. WORD [a-zA-Z]+
  7.  
  8. %%
  9. {DIGIT}+    { printf("Input is a number: %s\n", yytext); }
  10. {WORD}      { printf("Input is a word: %s\n", yytext); }
  11. .           { printf("Invalid input: %s\n", yytext); }
  12.  
  13. %%
  14.  
  15. int main() {
  16.     yylex();
  17.     return 0;
  18. }
  19.  
Success #stdin #stdout #stderr 0.03s 6876KB
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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/2I1Pw9/prog:2:1: Syntax error: Operator expected
ERROR: /home/2I1Pw9/prog:18:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/tqXzFL
language:
Prolog (swi 7.6.4)
created:
16 days ago
visibility:
public

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