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  1. %{
  2.     #include<stdio.h>
  3.     #include<stdlib.h>
  4. %}
  5. digit [0-9]
  6. letter [a-zA-Z]
  7.  
  8. %%
  9. {digit}+
  10. {printf("Integer\n");}
  11. {digit}+"."{digit}+
  12. {printf("Real Number\n");}
  13. {letter}+
  14. {printf("Word\n");}
  15. [\t\n]+ ;
  16. .
  17. {printf("Invalid Input\n");}
  18. %%
  19. int main()
  20. {
  21.     printf("Enter input:");
  22.     yylex();
  23.     return 0;
  24. }
  25. int yywrap()
  26. {
  27.     return 1;
  28. }
Success #stdin #stdout #stderr 0.02s 6824KB
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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/WNdhUV/prog:2:5: Syntax error: Operator expected
ERROR: /home/WNdhUV/prog:28:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/oCDlJ1
language:
Prolog (swi 7.6.4)
created:
4 days ago
visibility:
public

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