A simple program asks the user to give two numbers and then the program will subtract the two numbers and display the results on the screen using C# programming language.
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public partial class Form1 : Form
private void button1_Click(object sender, EventArgs e)
double a, b, c;
a = Convert.ToDouble(textBox1.Text);
b = Convert.ToInt32(textBox2.Text);
c = a - b;
textBox3.Text = c.ToString();