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  1. %{
  2. #include <stdio.h>
  3. %}
  4.  
  5. %%
  6. [a-zA-Z0-9_.]+@[a-zA-Z]+\.[a-zA-Z]{2,}  { printf("Valid Email: %s\n", yytext); }
  7. .  ; // Ignore other characters
  8. %%
  9.  
  10. int main() {
  11.     printf("Enter an email ID: ");
  12.     yylex();
  13.     return 0;
  14. }
  15.  
  16. int yywrap() {
  17.     return 1;
  18. }
  19.  
Success #stdin #stdout #stderr 0.03s 6948KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
stderr 
ERROR: /home/qGwt3N/prog:2:1: Syntax error: Operator expected
ERROR: /home/qGwt3N/prog:18:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/XPyVbC
language:
Prolog (swi 7.6.4)
created:
279 days ago
visibility:
public

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