private void button1_Click_1(object sender, System.EventArgs e)
{
LeftExpression le = new LeftExpression(30);
ForwardExpression lf = new ForwardExpression(50);
RepeatExpression re = new RepeatExpression(4);
re.AddExpression(le);
re.AddExpression(lf);
re.interpret(ctx);
}
private void button1_Click(object sender, System.EventArgs e)
{
int a = Convert.ToInt32(txtVar.Text);
LeftExpression le = new LeftExpression(a);
le.interpret(ctx);
}