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  1. %{
  2.   #include <stdio.h>
  3.   int lower = 0, upper = 0, mixed = 0;
  4. %}
  5.  
  6. %%
  7. [a-z]+              { lower++; }
  8. [A-Z]+              { upper++; }
  9. .+ {mixed++;}
  10. %%
  11.  
  12. int main() {
  13.   yylex();
  14.   printf("Lower = %d, Upper = %d, Mixed = %d\n", lower, upper, mixed);
  15.   return 0;
  16. }
  17.  
  18. int yywrap() {
  19.   return 1;
  20. }
  21.  
Success #stdin #stdout #stderr 0.03s 6948KB
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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/rozuDI/prog:20:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/KzB5TO
language:
Prolog (swi 7.6.4)
created:
7 days ago
visibility:
public

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