static void Main(string[] args)
{
square sq1 = new square(2, 3);
circle cr = new circle(2, 3, 4);
cr.show();
sq1.show();
//Task_01
Console.Write("***********\nTASK_01\n***********\n");
square sq = new square(2, 3);
Console.WriteLine(sq.ToString());
Console.Write("\n\n***********\nTASK_02\n***********\n");
Console.Write("\nEnter value 1: ");
double a = double.Parse(Console.ReadLine());
Console.Write("\nEnter value 2: ");
double b = double.Parse(Console.ReadLine());
//circle c=new circle(2,3,4);
calculator cal = new calculator(a, b);
int i = 1;
while (i == 1)
{
Console.WriteLine("\nChoose any one operation:\n");
Console.WriteLine("1: ADD\n");
Console.WriteLine("2: SUBSTRACT\n");
Console.WriteLine("3: MULTIPLY\n");
Console.WriteLine("4: DIVIDE\n");
Console.WriteLine("0: EXIT\n");
int opt = int.Parse(Console.ReadLine());
if (opt == 1)
{
Console.WriteLine("\n" + a + "+" + b + "= " + cal.add());
}
else if (opt == 2)
{
Console.WriteLine("\n" + a + "-" + b + "= " + cal.sub());
}
else if (opt == 3)
{
Console.WriteLine("\n" + a + "*" + b + "= " + cal.mul());
}
else if (opt == 4)
{
Console.WriteLine("\n" + a + "/" + b + "= " + cal.div());
}
else if (opt == 0)
{
i = 0;
}
}
//Console.WriteLine(c.ToString());
Console.ReadKey();
}