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 Go (judge verdict: Accepted)

package main

import (
	"fmt"
	"bufio"
	"os"
	"strconv"
	"reflect"
)

func showType(obj interface{}){
	v:=reflect.ValueOf(obj)
	fmt.Println(v.Type())
}

func main(){
	//stdinから読み込み
	sc:=bufio.NewScanner(os.Stdin)
	//1行読み込む(Splitの設定が1行になっているため)
	//scanner.Split(bufio.ScanWords) // 1単語ごと
	//scanner.Split(bufio.ScanLines) // 1行ごと（デフォルト）と変更可能
	

	num_slice:=make([]int,0)

	//読み込み
	//0が出現するまで読み込みを継続する
	for{
		sc.Scan()
		line:=sc.Text()
		num,_:=strconv.Atoi(line)

		if num==0{
			break
		}
		num_slice=append(num_slice,num)
	}
	

	//エラー処理
	if err:=sc.Err();err!=nil{
		fmt.Println("fail to read stdio")
	}

	for idx,num:=range(num_slice){
		fmt.Printf("Case %d: %d\n",idx+1,num)
	}


}