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  1. letter			[a-zA-Z]
  2. digit			[0-9]
  3. opFrac			"."{digit}+
  4. opExponent		[Ee][+-]?{digit}+
  5. num			{digit}+{opFrac}?{opExponent}?
  6. id 			{letter}({letter}|{digit})*
  7.  
  8. %%
  9. int|float|char		{printf("keyword \n");}
  10. {id}			{printf("ID\n");}
  11. {digit}+		{printf("number \n");}
  12. [" "|\t|\n]		;
  13. \+			{printf("plus \n");}
  14. .			{printf("other \n");}
Success #stdin #stdout #stderr 0.03s 6900KB
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Standard input is empty
stdout
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Standard output is empty
stderr
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ERROR: /home/QNzoH1/prog:1:24: Syntax error: Operator expected
ERROR: /home/QNzoH1/prog:14:45: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/eO993o
language:
Prolog (swi 7.6.4)
created:
13 hours ago
visibility:
public

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