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  1. %%writefile program.l
  2. %{
  3. #include <stdio.h>
  4. %}
  5.  
  6. %%
  7. [0-9]+{ printf("Number: %s\n", yytext); }
  8. [a-zA-Z]+{ printf("Word: %s\n", yytext); }
  9. .|\n{ /* ignore other characters */ }
  10. %%
  11.  
  12. int main() {
  13.     yylex();
  14.     return 0;
  15. }
Success #stdin #stdout #stderr 0.02s 6888KB
comments (?)
stdin
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void main()
{ int a= 10;
{

gcc lex.yy.c -lfl -o lexer
stdout
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Standard output is empty
stderr
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ERROR: /home/SH6VfH/prog:15:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? ERROR: Unknown option (h for help)
   Exception: (3) program ? ERROR: Unknown option (h for help)
   Exception: (3) program ? ERROR: Unknown option (h for help)
   Exception: (3) program ? ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/WiyGL3
language:
Prolog (swi 7.6.4)
created:
14 hours ago
visibility:
public

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