%{
int num_lines = 0, num_words = 0;
%}

%%
\n           { ++num_lines; }
[a-zA-Z]+    { ++num_words; }
.
%%
main()  {
  yylex();
  printf( "# of lines = %d, # of words = %d\n",
               num_lines, num_words );
}

yywrap() { return 1; }