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  1. %{
  2.   #include<stdio.h>
  3. }
  4. %%
  5. "if"|"else" {printf("keyword",yytext);}
  6. [a-zA-Z][a-zA-Z0-9_]* {printf("identifier",yytext);}
  7. %%
  8. int main()
  9. {
  10.   printf("enter the input");
  11.   yylex();
  12.   return 0;
  13. }
  14. int yywrap()
  15. {
  16.   return 1;
  17. }
Success #stdin #stdout #stderr 0.02s 6868KB
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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/KkMC9m/prog:17:0: Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/bx9ZxX
language:
Prolog (swi 7.6.4)
created:
2 days ago
visibility:
public

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