Problem:
Print Test Cases

In the online judge system, a judge file may include multiple datasets to check whether the submitted program outputs a correct answer for each test case. This task is to practice solving a problem with multiple datasets.

Write a program which reads an integer x and print it as is. Note that multiple datasets are given for this problem.

Input

The input consists of multiple datasets. Each dataset consists of an integer x in a line.

The input ends with an integer 0. You program should not process (print) for this terminal symbol.

Output

For each dataset, print x in the following format:

Case i: x

where i is the case number which starts with 1. Put a single space between "Case" and i. Also, put a single space between ':' and x.

Constraints

1 ≤ x ≤ 10000

The number of datasets ≤ 10000

Sample Input

3
5
11
7
8
19
0

Sample Output

Case 1: 3
Case 2: 5
Case 3: 11
Case 4: 7
Case 5: 8
Case 6: 19

Solution in C# (judge verdict: Accepted)

using System;
using System.Collections.Generic;
//using System.Linq;
//using System.Text;
//using System.Threading.Tasks;

//namespace _3_B
//{
class Program
{
    static void Main(string[] args)
    {
        int i = 1;
        while (true)
        {
            //?????????????????????
            string readData = Console.ReadLine();

            // ???????????£???????????????????????£??\??????
            string[] readDataValue = readData.Split(' ');
            int x = int.Parse(readDataValue[0]);

            //??£??\???????????????1??\????????£????????????????????????
            if (x >= 1)
            {
                Console.WriteLine("Case " + i + ": " + x);
            } 
            //x???0?????¨???????????????
            else if (x == 0) break;
            ++i;

        }
    }
}
//}