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  1. %{
  2. #include <stdio.h>
  3. %}
  4.  
  5. %%
  6. [a-zA-Z][a-zA-Z0-9]*   { printf("Identifier: %s\n", yytext); }
  7. [0-9]+(\.[0-9]+)?(E[+\-]?[0-9]+)?   { printf("Number: %s\n", yytext); }
  8. .|\n    {}
  9.  
  10. %%
  11. int yywrap() {
  12.     return 1;
  13. }
  14.  
  15. int main() {
  16.     yylex();
  17.     return 0;
  18. }
  19.  
Success #stdin #stdout #stderr 0.03s 6988KB
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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/SMlV8z/prog:18:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/1yjQRk
language:
Prolog (swi 7.6.4)
created:
30 days ago
visibility:
public

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