%{
#include <stdio.h>
int capitals = 0;
int smalls = 0;
int words = 0;
%}
 
%%
[A-Z]    { capitals++; }
[a-z]    { smalls++; }
[a-zA-Z]+ { words++; }
[ \t\n]+ { /* Ignore whitespace */ }
.        { /* Ignore other characters */ }
%%
 
int main() {
    printf("Enter a sentence (press Ctrl+D or Ctrl+Z to finish):\n");
    yylex();
    printf("Number of capital letters: %d\n", capitals);
    printf("Number of small letters: %d\n", smalls);
    printf("Number of words: %d\n", words);
    return 0;
}
 
int yywrap() {
    return 1;
}

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