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  1. %{
  2. #include <stdio.h>
  3. %}
  4.  
  5. %%
  6. ^[6-9][0-9]{9}$    { printf("Valid mobile number\n"); }
  7. .+                 { printf("Invalid mobile number\n"); }
  8. %%
  9.  
  10. int main() {
  11.     printf("Enter mobile number: ");
  12.     yylex();
  13.     return 0;
  14. }
  15.  
  16. int yywrap() {
  17.     return 1;
  18. }
Success #stdin #stdout #stderr 0.03s 6892KB
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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/NlvBu0/prog:18:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/qJkeI9
language:
Prolog (swi 7.6.4)
created:
17 hours ago
visibility:
public

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