A C# program calculates monthly cloud storage fees based on a user's member ID length and storage usage in gigabytes (GB).

1  int bill = 0;
2  Console.Write("Enter your member ID: ");
3  string memberId = Console.ReadLine();
4  while (memberId.Length < 8) {
5      string displayMessage = "ID too short";
6      Console.Write(displayMessage);
7      memberId = Console.ReadLine();
8  }
9  Console.Write("Enter storage used in GB: ");
10 int storage = Convert.ToInt32(Console.ReadLine());
11 if (storage < 10) {
12     bill = 5;
13 }
14 else {
15     bill = storage * 2;
16 }
17 Console.WriteLine(bill);

Figure 1