%{
#include <stdio.h>
int line_count = 0;
int word_count = 0;
int char_count = 0;
%}
 
%%
\n { 
    line_count++;
    char_count += strlen(yytext);
}
[a-zA-Z0-9_]+ {
    word_count++;
    char_count += strlen(yytext);
}
[ \t] {
    char_count += strlen(yytext);
}
. {
    char_count += strlen(yytext);
}
 
%%
 
int main() {
    printf("Enter text (press Ctrl+D when finished):\n");
    yylex();
 
    printf("\nResults:\n");
    printf("Number of lines: %d\n", line_count);
    printf("Number of words: %d\n", word_count);
    printf("Total characters: %d\n", char_count);
 
    return 0;
}
 
int yywrap() {
    return 1;
}

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