%{
#include <stdio.h>
int lines = 0, spaces = 0, tabs = 0, words = 0, characters = 0;
%}
 
%%
\n               { lines++; characters++; }
[ ]              { spaces++; characters++; } 
\t               { tabs++; characters++; }
[a-zA-Z0-9]+     { words++; characters += yyleng; }
.                { characters++; }
%%
 
int main() {
    printf("Enter text (Ctrl+D to end on Linux/Mac or Ctrl+Z on Windows):\n");
    yylex();
    printf("Lines: %d\nSpaces: %d\nTabs: %d\nWords: %d\nCharacters: %d\n", lines, spaces, tabs, words, characters);
    return 0;
}
 
int yywrap() {
    return 1;
}
 

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