%{
/* This program will count the number of word, punctuation, and
 * new lines in a input file.
 */
 
/* Variables to keep track of items found. */
int nwords = 0;
int npuncs = 0;
int nlines = 0;
%}

/* Rules for determining the tokens. */
word [a-zA-Z]+[ ]       
punc [\.\,\!\?\:\;]     
eol  \n                 

%%

{word}+               {++nwords;}
{punc}+               {++npuncs;}
{eol}+                {++nlines;}

%%
main()
{
  yylex();
  printf("\n");
  printf("%s%d\n","The numbers of punctuations in file = ",npuncs);
  printf("%s%d\n","The numbers of words in file = ",nwords);
  printf("%s%d\n","The numbers of line in file = ",nlines);
}

yywrap(){}