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  1. %{
  2. #include <stdio.h>
  3. %}
  4.  
  5. %%
  6. [0-9]+ { printf("Integer: %s\n", yytext); }
  7. [0-9]+\\.[0-9]*([eE][+-]?[0-9]+)? { printf("Float: %s\n", yytext); }
  8. [0-9]*\\.[0-9]+([eE][+-]?[0-9]+)? { printf("Float: %s\n", yytext); }
  9. [^0-9\\.\\n]+ { printf("Invalid Number: %s\n", yytext); }
  10. %%
  11.  
  12. int main() {
  13.     printf("Enter the string:\n");
  14.     yylex();
  15.     return 0;
  16. }
  17.  
Success #stdin #stdout #stderr 0.03s 6848KB
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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/vYSbSM/prog:16:1: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/Hvjjjz
language:
Prolog (swi 7.6.4)
created:
5 days ago
visibility:
public

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