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;   
    
class sample9{   
    static void Main(string[] args){   
        int x;
    
        for(int case_number = 1; case_number < 10001; case_number++){ 
                x = int.Parse(Console.ReadLine());
                
                if(x < 1 || x > 10000){
                    Console.WriteLine("xは1以上10000以下の数字で入力してください。");
                    Environment.Exit(0);   
                }
                
                if( x == 0){
                    break;
                }
                Console.WriteLine("Case {0}: {1}",case_number,x);   
        }  
    }   
}