%{
int lines = 0, words = 0, chars = 0;
%}
 
%%
\n      { lines++; chars++; }                /* Count new lines */
[ \t]+  { chars += yyleng; }                 /* Count spaces and tabs */
[^ \t\n]+ { words++; chars += yyleng; }      /* Count words and characters */
%%
 
int main()
{
    yylex();
    printf("Number of lines: %d\n", lines);
    printf("Number of words: %d\n", words);
    printf("Number of characters: %d\n", chars);
    return 0;
}
 
int yywrap() { return 1; }

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