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  1. %{
  2. #include <stdio.h>
  3. #include <stdlib.h>
  4. %}
  5.  
  6. %%
  7. [0-9]+\.[0-9]+    {
  8.                     float floatNumber = atof(yytext);
  9.                     int intNumber = (int)floatNumber;
  10.                     printf("Floating-point number: %f\n", floatNumber);
  11.                     printf("Integer part: %d\n", intNumber);
  12.                 }
  13. [0-9]+\.[0-9]+e[+-]?[0-9]+    {
  14.                     float floatNumber = atof(yytext);
  15.                     int intNumber = (int)floatNumber;
  16.                     printf("Floating-point number: %f\n", floatNumber);
  17.                     printf("Integer part: %d\n", intNumber);
  18.                 }
  19. .|\n                ; // Ignore all other characters
  20.  
  21. %%
  22.  
  23. int main() {
  24.     yylex();
  25.     return 0;
  26. }
Success #stdin #stdout #stderr 0.02s 6888KB
comments (?)
stdin 
3.456
stdout 
Standard output is empty
stderr 
ERROR: /home/u8XkNE/prog:26:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/5K6RCD
language:
Prolog (swi 7.6.4)
created:
2 years ago
visibility:
public

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