%{
    #include <stdint.h>

    uint32_t line_count = 0;
    uint32_t word_count = 0;
%}

%%
^[[:blank:]]*\n
[[:blank:]]+$
^[[:blank:]]+
[[:blank:]]+    { putchar(' '); }
\n              { line_count += 1; ECHO; }
[[:^space:]]+   { word_count += 1; ECHO; }
.               { ECHO; }
%%

// https://westes.github.io/flex/manual/Patterns.html

#include <stdlib.h>

int main(void) {

    yylex();

    printf("%d %d\n", line_count, word_count);

    return EXIT_SUCCESS;
}