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  1. %{
  2. #include <stdio.h>
  3. #include <string.h>
  4. %}
  5.  
  6. %%
  7. if      { printf("Keyword: if\n"); }
  8. else    { printf("Keyword: else\n"); }
  9. while   { printf("Keyword: while\n"); }
  10. /* Add more keywords here */
  11.  
  12. [ \t\n]    ; /* Skip whitespace and newline characters */
  13. .          ; /* Ignore any other characters */
  14.  
  15. %%
  16.  
  17. int main() {
  18.     yylex();
  19.     return 0;
  20. }
  21.  
Success #stdin #stdout #stderr 0.02s 6912KB
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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/U9MdVZ/prog:2:1: Syntax error: Operator expected
ERROR: /home/U9MdVZ/prog:20:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/w5OxAh
language:
Prolog (swi 7.6.4)
created:
13 days ago
visibility:
public

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