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  1. %{
  2. #include<stdio.h>
  3. #include<string.h>
  4. %}
  5. %%
  6. \+91-[1-9][0-9]{9} {printf("%s is a valid phone number",yytext);}
  7. %%
  8. int main(){
  9. yylex();
  10. return 0;
  11. }
  12. int yywrap(){
  13. return 1;
  14. }
Success #stdin #stdout #stderr 0.02s 6924KB
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stdin
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+91-9567547656
stdout
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Standard output is empty
stderr
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ERROR: /home/2K5R52/prog:14:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/wKJzbK
language:
Prolog (swi 7.6.4)
created:
2 days ago
visibility:
public

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