%{ 
int num_lines = 0; 
int num_spaces = 0; 
int num_tabs = 0; 
int num_others = 0; 
%} 
 
%% 
\n { num_lines++; } 
[ \t] { num_spaces++; } 
[\x01-\x09\x0b-\x1f\x7f] { num_tabs++; } 
. { num_others++; } 
%% 
 
int main() { 
yylex(); 
printf("Number of lines: %d\n", num_lines); 
printf("Number of spaces: %d\n", num_spaces); 
printf("Number of tabs/meta characters: %d\n", num_tabs); 
printf("Number of other characters: %d\n", num_others); 
 
return 0; 
} 
 
int yywrap() { 
return 1; 
} 

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