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  1. %{
  2. #include <stdio.h>
  3. %}
  4.  
  5. %%
  6.  
  7. [0-9]+\.[0-9]+   { 
  8.     printf("Given input is a float constant\n"); 
  9. }
  10.  
  11. [0-9]+            { 
  12.     printf("Given input is an integer constant\n"); 
  13. }
  14.  
  15. [a-zA-Z]+         { 
  16.     printf("Given input is not a constant\n");
  17. }
  18.  
  19. .|\n              { }
  20.  
  21. %%
  22.  
  23. int main(void) {
  24.     yylex();
  25.     return 0;
  26. }
  27.  
Success #stdin #stdout #stderr 0.04s 6972KB
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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/8PEqRP/prog:21:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/TnXaSD
language:
Prolog (swi 7.6.4)
created:
18 days ago
visibility:
public

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