private void button2_Click(object sender, EventArgs e)
{
int.TryParse(textBox1.Text, out int input);
int.TryParse(textBox2.Text, out int count);
MessageBox.Show(textBox1.Text + "의" + textBox2.Text + " 곱은" + Mymath.power(input, count));
}
private void button1_Click(object sender, EventArgs e)
{
int.TryParse(textBox1.Text, out int input);
Mymath m = new Mymath();
MessageBox.Show(textBox1.Text + "의 제곱은" + m.power(input));
}