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  1. Letter[a-z,A-Z]
  2. Digit[0-9]
  3. %%
  4. {letter}{printf("Input is an alphabet");}
  5. {digit}{printf("Input is a digit");}
  6. . {printf("Invalid Input");}
  7. %%
  8. void main(){
  9. 	printf("Enter input\n");
  10. 	yylex;
  11. }
  12. int yywrap(){
  13. 	return 1;
  14. }
Success #stdin #stdout #stderr 0.04s 7024KB
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stdin
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2
stdout
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Standard output is empty
stderr
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ERROR: /home/5zwTrh/prog:1:6: Syntax error: Operator expected
ERROR: /home/5zwTrh/prog:14:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/wOPXRT
language:
Prolog (swi 7.6.4)
created:
5 days ago
visibility:
public

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