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  1. %
  2. {
  3.   #include <stdio.h>
  4.   int flag = 0; 
  5. %} 
  6.  
  7. %%
  8.  [a - z.0 - 9 _] + @[a - z] + ".com"
  9. flag = 1; 
  10. %%
  11.  
  12. int main() {
  13.  
  14.   printf("Please Enter your email: ");
  15.   yylex();
  16.   if (flag == 1)
  17.     printf("This email is accepted");
  18.   else
  19.     printf("This email is not Accepted");
  20. }
Success #stdin #stdout #stderr 0.02s 6992KB
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stdin
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aa@gmail.com
stdout
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Standard output is empty
stderr
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ERROR: /home/Y70Wv0/prog:20:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/avgaKc
language:
Prolog (swi 7.6.4)
created:
1 day ago
visibility:
public

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