private void buttonSolveTask1_Click(object sender, EventArgs e) { int n = int.Parse(textBoxNTask1.Text); library solver = new library(); double sum = solver.CalculateSum(n); labelTask1Result.Text = "Сума дорівнює = " + sum.ToString(); }
static void Main(string[] args) { Console.Write("Введiть число: "); int n = int.Parse(Console.ReadLine()); library solver = new library(); double sum = solver.CalculateSum(n); Console.WriteLine("Сума довiвнює = " + sum); }