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  1. %{
  2. #include <stdio.h>
  3. %}
  4.  
  5. %%
  6.  
  7. [0-9]+          { printf("Number "); }      // Matches one or more digits (a number)
  8. [+\-*/]          { printf("%s ", yytext); }  // Matches +, -, *, or /
  9. [ \t\n]+         { /* ignore whitespace */ }  // Ignore whitespace (spaces, tabs, newlines)
  10.  
  11. %%
  12.  
  13. int main() {
  14.     yylex();  // Call the lexer to start tokenizing the input
  15.     return 0;
  16. }
  17.  
Success #stdin #stdout #stderr 0.04s 6936KB
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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/asIWyV/prog:16:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/pEAitT
language:
Prolog (swi 7.6.4)
created:
3 days ago
visibility:
public

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