Question

A program computing the quotient and remainder of a division is given below. Identify two possible errors when you run this program.

private void button1_Click(object sender, EventArgs e)

{ int dividend, divisor, quotient, remainder;

dividend = int.Parse(textBox1.Text);

divisor = int.Parse(textBox2.Text);

quotient = dividend / divisor;

remainder = dividend % divisor;

textBox3.Text = quotient.ToString();

textBox4.Text = remainder.ToString(); }

Answer 1

private void button1_Click(object sender, EventArgs e)

{ int dividend, divisor, quotient, remainder;

dividend = int.Parse(textBox1.Text);

divisor = int.Parse(textBox2.Text);

quotient = dividend / divisor;

remainder = dividend % divisor;

textBox3.Text = quotient.ToString();

textBox4.Text = remainder.ToString(); }

Two problems are:

   Problem 1:
       When divisor = 0, then dividend / divisor is undefined
   Problem 2:
       When dividend or divisor is negative

       dividend is negative and divisor is positive
       dividend is negative and divisor is negative
       dividend is positive and divisor is negative