%{
#include <stdio.h>
int line_count = 0, space_count = 0, tab_count = 0, other_count = 0;
%}
 
%%
\n          { line_count++; }
[ ]         { space_count++; }
\t          { tab_count++; }
.           { other_count++; }
%%
 
int main()
{
    printf("Enter input (Ctrl+D to end):\n");
    yylex();
    printf("\nNumber of lines: %d\n", line_count);
    printf("Number of spaces: %d\n", space_count);
    printf("Number of tabs: %d\n", tab_count);
    printf("Number of other characters: %d\n", other_count);
    return 0;
}
 
int yywrap() {
    return 1;
}
 

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