fork download 
  1. %{
  2. #include <stdio.h>
  3. %}
  4. %%
  5. 0[xX][0-9a-fA-F]+    { printf("%s is a hexadecimal number\n", yytext); }
  6. 0[0-7]+              { printf("%s is an octal number\n", yytext); }
  7. [1-9][0-9]*          { printf("%s is a decimal number\n", yytext); }
  8. 0                    { printf("0 is considered as zero\n"); }
  9. .                    { printf("Invalid input: %s\n", yytext); }
  10. %%
  11.  
  12. int main() {
  13.     yylex();
  14.     return 0;
  15. }
  16.  
  17.  
Success #stdin #stdout #stderr 0.02s 6992KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
stderr 
ERROR: /home/wINj9z/prog:2:1: Syntax error: Operator expected
ERROR: /home/wINj9z/prog:16:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/TAgrrU
language:
Prolog (swi 7.6.4)
created:
4 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!