int c = 0,d=0,e=0;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
c = c + 1;
button1.Text = c.ToString();
}
private void timer1_Tick(object sender, EventArgs e)
{
c = c + 1;
d = c%3;
button1.Text = c.ToString();
if (d==1)
{
button1.BackColor = System.Drawing.Color.FromName("Red");
button2.BackColor = System.Drawing.Color.FromName("White");
button3.BackColor = System.Drawing.Color.FromName("White");
}
else if (d == 0)
{
button1.BackColor = System.Drawing.Color.FromName("White");
button2.BackColor = System.Drawing.Color.FromName("Yellow");
button3.BackColor = System.Drawing.Color.FromName("White");
}
else
{
button1.BackColor = System.Drawing.Color.FromName("White");
button2.BackColor = System.Drawing.Color.FromName("White");
button3.BackColor = System.Drawing.Color.FromName("Green");
}
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