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  1. %{
  2. #include<stdio.h>
  3. %}
  4.  
  5. %%
  6. if|else|printf|int|main        { printf("%s is a keyword\n", yytext); }
  7.  
  8. [a-zA-Z]+                      { printf("%s is a word\n", yytext); }
  9.  
  10. .|\n                           { ECHO; }
  11. %%
  12.  
  13. int main() {
  14.     printf("Enter the message:\n");
  15.     yylex();
  16. }
  17.  
  18. int yywrap() {
  19.     return 1;
  20. }
  21.  
Success #stdin #stdout #stderr 0.03s 6892KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
stderr 
ERROR: /home/JEXS2q/prog:20:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/z2CjLs
language:
Prolog (swi 7.6.4)
created:
1 day ago
visibility:
public

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