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  1. %{
  2. #include<stdio.h>
  3. #include<stdlib.h>
  4. %}
  5.  
  6. %%
  7. [0-9]+  { printf("%s\n", yytext); }
  8. .       { } // Ignore other characters
  9.  
  10. %%
  11.  
  12. int main()
  13. {
  14.     printf("Enter a string: \n");
  15.     yylex();
  16.     return 0;
  17. }
  18.  
  19. int yywrap()
  20. {
  21.     return 1;
  22. }
  23.  
Success #stdin #stdout #stderr 0.02s 6860KB
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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/tKELbI/prog:2:1: Syntax error: Operator expected
ERROR: /home/tKELbI/prog:22:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/WJJzR4
language:
Prolog (swi 7.6.4)
created:
5 days ago
visibility:
public

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