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  1. %{
  2. #include <stdio.h>
  3. %}
  4.  
  5. %%
  6. [0-9]+                printf("number %s\n", yytext);
  7. [a-zA-Z]+             printf("word %s\n", yytext);
  8. [+-/*()]              printf("operator %c\n", *yytext);
  9. \s                    ; /* ignore whitespace */
  10. .                     printf("character %c\n", *yytext);
  11.  
  12. %%
  13.  
  14. int main(void) {
  15.   yylex();
  16.   return 0;
  17. }
  18.  
Success #stdin #stdout #stderr 0.04s 6932KB
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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/aysRXh/prog:2:1: Syntax error: Operator expected
ERROR: /home/aysRXh/prog:17:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/3lNaRG
language:
Prolog (swi 7.6.4)
created:
1 year ago
visibility:
public

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