public static void Main()
Console.WriteLine("\n **Hello friends this is covid-19 checkup \n\n");
Console.WriteLine("enter your name: ");
Console.WriteLine("enter your age: ");
Console.WriteLine("enter 1 for YES and 0 for NO.\n\n");
Console.WriteLine("dear %s,\n do you feel like fever?\n",name);
Console.WriteLine("yes = 1, No = 0\n");