#include <stdio.h>
#include <stdlib.h>

void count_lines(const char *filename) {
    FILE *file = fopen(filename, "r");
    if (file == NULL) {
        printf("0\t%s\n", filename);
        return;
    }

    int line_count = 0;
    int ch;

    while ((ch = fgetc(file)) != EOF) {
        if (ch == '\n') {
            line_count++;
        }
    }
    
    fclose(file);
    printf("%d\t%s\n", line_count, filename);
}

int main(int argc, char *argv[]) {
    if(argc < 2){
        fprintf(stderr, "Usage: %s <file1> [file2 ...]", argv[0]);
        return 1;
    }
    for (int i =1; i <argc; i++) {
        count_lines(argv[i]);
    }

    return 0;
}