public static fraction operator -(fraction x, fraction y)
{
fraction z = new fraction();
z.Num = x.Num * y.Den - y.Num * x.Den;
z.Den = x.Den * y.Den;
z.Reduce();
return z;
}
private void button1_Click(object sender, EventArgs e)
{
int a, b;
if (textBoxNum.Text == "")
{
fraction f = new fraction();
frac.Text = f.Num + "/" + f.Den;
}
else
{
a = Convert.ToInt32(textBoxNum.Text);
if (textBoxDen.Text == "")
{
fraction f = new fraction(a);
frac.Text = f.Num + "/" + f.Den;
}
else
{
b = Convert.ToInt32(textBoxDen.Text);
fraction f = new fraction(a, b);
frac.Text = f.Num + "/" + f.Den;
}
}
}
public fraction(fraction x)
{
n = x.n;
d = x.d;
}
