func coolfunc(b, v) {
    v = 3;
    ret = (2 + 3) * v;
    if (ret > 10) {
        print("greater than 10");
    }

    if (ret > 20) {
        print("geater than 20");
    } else {
        print("no greater than 20");
    }

    for (i = 1; i < 10; i = i+1) {
        print(i);
    }
    j = 2;
    j = 3;

    while (j < 5) {
        print(j);
        j = j+1;
    }

    print(ret);
    print(v);
    print(b);

    return ret;
}

func main() {
    coolfunc("Hello world", 4);

    i = 0;
    i = 0;
    {
        i = 1;
        i = 2;

        j = 0;
        j = 1;

        {
            i = 3;
            i = 4;
            j = 2;
            j = 3;

            k = 1;
        }

        k = 2;
        i = 1;
        j = 2;
    }

    return 0;
}
