void printStats(int uid, long long length, long long A_count, long long T_count, long long G_count, long long C_count, FILE *output) {
    long long total_count = A_count + T_count + G_count + C_count;
    fprintf(output, "Total statistics for %d chromosomes\n\n", uid);
    fprintf(output, "Length: %lld\n", length);
    fprintf(output, "Nucleotide frequencies:\n");
    fprintf(output, "A: % 10lld % 5.2f%%\n", A_count, ((double)A_count / total_count) * 100);
    fprintf(output, "T: % 10lld % 5.2f%%\n", T_count, ((double)T_count / total_count) * 100);
    fprintf(output, "G: % 10lld % 5.2f%%\n", G_count, ((double)G_count / total_count) * 100);
    fprintf(output, "C: % 10lld % 5.2f%%\n", C_count, ((double)C_count / total_count) * 100);
    fprintf(output, "GC content:    %.2f%%\n\n", ((double)(G_count + C_count) / total_count) * 100);
}


void printFileContent_fgetc_putchar_rewind(FILE *file) {
    int c;
    rewind(file); // reset the file position
    while ((c = fgetc(file)) != EOF) {
        putchar(c);
    }
    printf("\n");
}

void printFileContent_fgetc_putchar_fseek(FILE *file) {
    fseek(file, 0, SEEK_SET); // Set the file position indicator to the beginning of the file
    int c;
    while ((c = fgetc(file)) != EOF) {
        putchar(c);
    }
    printf("\n");
}
void printFileContent_getc_printf(FILE *f)
{
    int c;
    while ((c = getc(f)) != EOF){
            printf("%c",c);
        }
    printf("\n");
}

void printFileContent_fread_buffer(FILE *file) {
    fseek(file, 0, SEEK_SET); // Set the file position indicator to the beginning of the file

    char buffer[MAX_LINE_LENGTH];
    size_t bytesRead;

    while ((bytesRead = fread(buffer, 1, MAX_LINE_LENGTH, file)) > 0) {
        fwrite(buffer, 1, bytesRead, stdout); // Print buffer content to stdout
    }

    printf("\n");
}

void printFileContent_fgets_printf(FILE *file) {
    fseek(file, 0, SEEK_SET); // Set the file position indicator to the beginning of the file

    char line[MAX_LINE_LENGTH];

    while (fgets(line, MAX_LINE_LENGTH, file) != NULL) {
        printf("%s", line); // Print each line to stdout
    }

    printf("\n");
}

void printFileContent_getc_putchar(FILE *file) {
    fseek(file, 0, SEEK_SET); // Set the file position indicator to the beginning of the file

    int c;
    while ((c = getc(file)) != EOF) {
        putchar(c); // Print each character to stdout
    }

    printf("\n");
}

...

    char *line = NULL;
    int chromosome_cunter = 0;
    size_t len = 0;
    ssize_t read;
    char *currentUID = NULL;

    while ((read = getline(&line, &len, fasta)) != -1) {
        if (line[0] == '>') {

...