%{
#include <stdio.h>
 
int nl = 0;   /* number of lines */
int nw = 0;   /* number of words */
int nb = 0;   /* number of blank spaces */
int nc = 0;   /* number of characters */
%}
 
%%
\n              { nl++; }
[ \t]+           { nb++; }
[a-zA-Z0-9]+     { nw++; nc += yyleng; }
.                { nc++; }
%%
 
int yywrap()
{
    return 1;
}
 
int main()
{
    yylex();
 
    printf("Lines : %d\nWords : %d\nCharacters : %d\nBlanks : %d\n",
            nl, nw, nc, nb);
 
    return 0;
}

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