如何让我的代码打印出更改？我用模但它的唯一打印出剩余

public class Change { 

    public static void main(String[] args) { 
     System.out.print("Enter the amount due: ");//Variable = amount 
     Scanner keyboard = new Scanner(System.in); 
     int amount = keyboard.nextInt(); 

     System.out.print("Enter the amount recieved from Customer: "); 
     Scanner keyboard2 = new Scanner(System.in); 
     int customer = keyboard2.nextInt();//variable = customer 

     double change = customer - amount; 
     System.out.println("You need to give to customer"); 

     double remainingAmount = (double) (change * 100); 

     double numDollars = remainingAmount/100; 
     remainingAmount = remainingAmount % 100; 

     double numQuarters = remainingAmount/25; 
     remainingAmount = remainingAmount % 25; 

     double numDimes = remainingAmount/10; 
     remainingAmount = remainingAmount % 10; 

     double numNickels = remainingAmount/5; 
     remainingAmount = remainingAmount % 5; 

     double numPennies = remainingAmount; 

     System.out.println("Dollars: " + numDollars); 
     System.out.println("Quarters: " + numQuarters); 
     System.out.println("Dimes: " + numDimes); 
     System.out.println("Nickels: " + numNickels); 
     System.out.println("Pennies: " + numPennies); 

    } 

}

当我尝试运行代码，我只收到回其余例如，当我需要为247金额类型并输入客户编号315我得到68为余额在“美元”的第一个陈述中：如何让我的代码打印出更改？我用模但它的唯一打印出剩余

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2016-09-23 T. Bone

*我使用模数，但它只是打印出余数*呃，这就是模数... – Li357

是的，我知道，但我想我没有正确地说出来，我试图取模数，然后将其分解再往下走进下一个宿舍。例如，在我的例子中，所需的金额为247。那么收到的金额是315.其余的68是正确的？我怎样才能让它跳过这一点，并从分配到100美元的美元开始到宿舍？并且宿舍是序列中的下一个;但它只打印出第一个变量的其余部分。对不起！ –

你的代码中的逻辑实际上对我来说看起来很好。您使用分区确定给定硬币的数量，然后使用模数将余数转换为尝试使用较小的硬币。你的输出是什么意外？ –

您总是只看到美元金额而没有金币的原因是您提示用户输入美元金额。您的代码然后将此美元金额乘以100以确定美分数量。由于输入总是倍数的dolars，在除以100之后将不会有任何余数，因此将不会有任何硬币。

如果你想看到一些硬币，然后允许用户输入与分数美分的美元金额，作为double类型的输入，然后你会看到美分这个（没有双关语意）：

System.out.print("Enter the amount due: ");//Variable = amount 
Scanner keyboard = new Scanner(System.in); 
double amount = keyboard.nextDouble();  // e.g. 311.00 

System.out.print("Enter the amount recieved from Customer: "); 
Scanner keyboard2 = new Scanner(System.in); 
double customer = keyboard2.nextDouble(); // e.g. 320.49 

double change = customer - amount;   // 9.4900000 

int remainingAmount = (int)(change * 100); // 949 

int numDollars = remainingAmount/100;  // 9 (49 gets truncated) 
remainingAmount = remainingAmount % 100; // 49 remainder 

int numQuarters = remainingAmount/25;  // 1 (24 gets truncated) 
remainingAmount = remainingAmount % 25;  // 24 remainder 

int numDimes = remainingAmount/10;  // 2 (4 gets truncated) 
remainingAmount = remainingAmount % 10;  // 4 remainder 

int numNickels = remainingAmount/5;  // 0 
remainingAmount = remainingAmount % 5;  // 4 remainder 

int numPennies = remainingAmount;   // 4 pennies left 

System.out.println("Dollars: " + numDollars); 
System.out.println("Quarters: " + numQuarters); 
System.out.println("Dimes: " + numDimes); 
System.out.println("Nickels: " + numNickels); 
System.out.println("Pennies: " + numPennies);

来源

2016-09-23 01:05:49

如何让我的代码打印出更改？我用模但它的唯一打印出剩余

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