%{
#include <stdio.h>

int line_count = 0;
int tab_count = 0;
int space_count = 0;
int word_count = 0;
int char_count = 0;
int in_word = 0;
%}

%%
\n      { line_count++; char_count++; }
\t      { tab_count++; char_count++; }
" "     { space_count++; char_count++; in_word = 0; }
[^ \t\n]+ { word_count += !in_word; in_word = 1; char_count += yyleng; }
.       { char_count++; }

%%

int main(int argc, char *argv[]) {
    if (argc < 2) {
        fprintf(stderr, "Usage: %s <input_file>\n", argv[0]);
        return 1;
    }

    FILE *file = fopen(argv[1], "r");
    if (!file) {
        perror("Error opening file");
        return 1;
    }

    yyin = file;
    yylex();
    fclose(file);

    printf("Lines: %d\n", line_count);
    printf("Tabs: %d\n", tab_count);
    printf("Spaces: %d\n", space_count);
    printf("Words: %d\n", word_count);
    printf("Characters: %d\n", char_count);

    return 0;
}