package homework4;
import java.util.Scanner;
public class Prog4 {
static Scanner scanner = new Scanner(System.in);
public static void main(String[] args)
{ CreditCardNumber[] cred1;
CreditCardNumber cred2 = getInput();
Display("The complete number from your input:", cred2);
cred1 = getInputArray();
DisplayArray(cred1);
TryAnother(cred1);
}
public static CreditCardNumber getInput() {
String ID;
String accNum;
CreditCardNumber tempCred;
System.out.printf("Please enter issuer ID:");
ID = scanner.next();
System.out.printf("Please enter account number:");
accNum = scanner.next();
tempCred = new CreditCardNumber(ID, accNum);
return tempCred;
}
public static void Display(String ch, CreditCardNumber cred2)
{
System.out.println(ch);
System.out.println(cred2.toString().replaceAll(".{4}", "$0 "));
}
public static CreditCardNumber[] getInputArray()
{
CreditCardNumber[] tempArray;
String tempID;
int size;
System.out.printf("Please enter size of the aray:");
size = scanner.nextInt();
if(size < 1)
{
size = 1;
}
tempArray = new CreditCardNumber[size];
System.out.printf("Please enter issuer ID:");
tempID = scanner.next();
for(int i = 0; i < tempArray.length; i++)
{
tempArray[i] = new CreditCardNumber();
tempArray[i].CreateCred(tempID);
}
return tempArray;
}
public static void DisplayArray(CreditCardNumber[] cred1)
{
for(int i = 0; i< cred1.length; i++)
{
Display("Credit Card # " + i+":" + '\n', cred1[i]);
}
System.out.println();
}
public static boolean TryAnother(CreditCardNumber[] cred1) // pass cred1 as a parameter
{
String s;
System.out.printf("Get more credit card numbers? (n for no):");
s = scanner.next();
if(s.charAt(0) != 'N' || s.charAt(0) != 'n')
{
do
{
TryAnother(cred1);
cred1 = getInputArray();
DisplayArray(cred1);
}while(s.charAt(0) != 'N' || s.charAt(0) != 'n');
}
return false; // put the return statement here
}
}
嗨,我正在尝试从我的 TryAnother 方法中的 getInputArray 方法重复,我尝试使用 do-while 循环但它说 cred1 在 do while 循环中未定义但是当我尝试为 cred1 创建本地对象时它给了我错误代码无法访问 如果 do-while 循环工作,输出应该是这样的
Enter a credit card issuer number: 321321
Enter an account number: 654654654
The complete number from your input:
3213 2165 4654 6549
Enter the number of elements in the array: 7
Enter an issuer ID# (6 digits): 789789
Credit Card # 0:
7897 8931 4062 1219
Credit Card # 1:
7897 8920 2125 3522
Credit Card # 2:
7897 8971 9793 0944
Credit Card # 3:
7897 8979 3216 3090
Credit Card # 4:
7897 8995 0461 8493
Credit Card # 5:
7897 8948 8037 5909
Credit Card # 6:
7897 8966 0251 9953
Get more credit card numbers? (n for no): ok
Enter the number of elements in the array: 3
Enter an issuer ID# (6 digits): 345345
Credit Card # 0:
3453 4576 6705 1666
Credit Card # 1:
3453 4548 1163 5684
Credit Card # 2:
3453 4563 8807 0419
获取更多信用卡号码?(n 表示否):当然
任何人都可以建议一种方法来执行 do-while 循环吗?先感谢您
我已经编辑了代码,因为当我输入 no 时,由于某种原因它正在执行重复部分,进程不会终止
就像是:
Please enter issuer ID:321321
Please enter account number:654654654
The complete number from your input:
3213 2165 4654 6549
Please enter size of the aray:7
Please enter issuer ID:789789
Credit Card # 0:
7897 8985 6852 9257
Credit Card # 1:
7897 8917 0678 9958
Credit Card # 2:
7897 8900 5781 0934
Credit Card # 3:
7897 8949 2244 6098
Credit Card # 4:
7897 8941 3828 4895
Credit Card # 5:
7897 8965 9233 5006
Credit Card # 6:
7897 8981 8442 5880
Get more credit card numbers? (n for no):n
Get more credit card numbers? (n for no):n
Get more credit card numbers? (n for no):no
Get more credit card numbers? (n for no):
as you can see when I enter no it keep repeat the same sentence what i want is for it to repeat from enter the array size sentence how can i do this?