java - 货币面额计划

Question

我正在做一项作业，并且在很大程度上我已经编写了大部分代码。该程序要求用户输入美元和美分的金额。然后，该程序会将金额分成不同的面额。我之前就让它工作了，但是在格式化我的打印语句并做了一些测试之后，我意识到没有为硬币打印任何值。任何意见或建议将不胜感激。下面是我的代码和输出。

import java.util.*;

public class BillBreaker {

    // Instantiate Scanner class for reading keyboard input
    public static Scanner kbd = new Scanner(System.in);

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        // instantiate Scanner class for reading keyboard input

        double orgAmount;
        int orgPennies; // pennies part of the amount
        int remPennies;
        long orgDollars;
        // variables for bills of denominations.
        long hundreds;
        int fifties, twenties, tens, fives, twos, ones;

        //variables for keeping track of coins
        int pennies, nickels, dimes, quarters;

        // print greeting and prompt user for input.
        System.out.println("Given an amount in dollars and cents, I will find");
        System.out.println("a combination of bills and coins:\n");
        System.out.println("Enter a dollar amount including cents.");

        // read amount of dollars and pennies.
        orgAmount = kbd.nextDouble();

        // printf is used to format user input into dollars and cents with comma delimiter
        System.out.printf("Amount you entered in Dollars and cents: $%,.2f\n  ",orgAmount);


        orgDollars = (long)orgAmount;
        System.out.printf("\nDollars Part of Original Amount: $%,d\n", orgDollars);

        //extract the pennies from in orgAmount
        orgPennies = (int)((orgAmount % 100));
        System.out.println("pennies part of orginal amount: " + orgPennies);

        //Extract and print the number of \$100 bills from the dollar amount. 
        //Reduce the dollar amount to account for \$100 bills
        hundreds = (long)orgAmount/100;
        orgAmount = orgAmount%100;
        System.out.printf ("Number of $100 bills: %,d\n",hundreds);

        //Extract and print the number of \$50 bills.  Reduce the dollar amount
        //to account for \$50 bills.
        fifties = (int)orgAmount/50;
        orgAmount = orgAmount%50;
        System.out.println ("Number of $50 bills: " + fifties);

        //Extract and print the number of \$20 bills.  Reduce the dollar amount
        //to account for \$20 bills.
        twenties = (int) orgAmount/20;
        orgAmount = orgAmount%20;
        System.out.println ("Number of $20 bills: " + twenties);

        //Extract and print the number of \$10 bills.  Reduce the dollar amount
        //to account for \$10 bills
        tens = (int) orgAmount/10;
        orgAmount = orgAmount%10;
        System.out.println ("Number of $10 bills: " + tens);

        //Extract and print the number of \$5 bills.  Reduce the dollar amount
        //to account for \$5 bills
        fives = (int) orgAmount/5;
        orgAmount = orgAmount%5;
        System.out.println ("Number of $5 bills: " + fives);

        //Extract and print the number of \$2 bills.  Reduce the dollar amount
        //to account for \$2 bills
        twos = (int) orgAmount/2;
        orgAmount = orgAmount%2;
        System.out.println ("Number of $2 bills: " + twos);

        //Extract and print the number of \$1 bills.  Reduce the dollar amount
        //to account for \$1 bills
        ones = (int) orgAmount/1;
        orgAmount = orgAmount%1;
        System.out.println ("Number of $1 bills: " + ones);

        //Extract and print the number of quarters from the number of pennies. 
        //Reduce the number of pennies to account for the quarters
        quarters = (int) (orgAmount/0.25);
        orgAmount = orgAmount%.25;
        System.out.println ("Number of Quarters: " + quarters);

        //Extract and print the number of dimes from the number of pennies. 
        //Reduce the number of pennies to account for the dimes
        dimes = (int) (orgAmount/0.10);
        orgAmount = orgAmount%.10;
        System.out.println ("Number of Dimes: " + dimes);

        //Extract and print the number of nickels from the number of pennies. 
        //Reduce the number of pennies to account for the nickels
        nickels = (int) (orgAmount/0.05);
        orgAmount = orgAmount%.05;
        System.out.println ("Number of Nickels: " + nickels);

        //Extract and print the number of pennies and terminate the program
        pennies = (int) (orgAmount/0.01);
        orgAmount = orgAmount%.01;
        System.out.println ("Number of Pennies: " + pennies);


    }

}

我的输出1:起始金额:323.55这为我提供了下面前 3 个测试输出中的正确数量。

Given an amount in dollars and cents, I will find
a combination of bills and coins:

Enter a dollar amount including cents.
323.55
Amount you entered in Dollars and cents: $323.55

Dollars Part of Original Amount: $323
pennies part of orginal amount: 23
Number of $100 bills: 3
Number of $50 bills: 0
Number of $20 bills: 1
Number of $10 bills: 0
Number of $5 bills: 0
Number of $2 bills: 1
Number of $1 bills: 1
Number of Quarters: 2
Number of Dimes: 0
Number of Nickels: 1
Number of Pennies: 0

输出2:起始金额:

Given an amount in dollars and cents, I will find
a combination of bills and coins:

Enter a dollar amount including cents.
2335.32
Amount you entered in Dollars and cents: $2,335.32

Dollars Part of Original Amount: $2,335
pennies part of orginal amount: 35
Number of $100 bills: 23
Number of $50 bills: 0
Number of $20 bills: 1
Number of $10 bills: 1
Number of $5 bills: 1
Number of $2 bills: 0
Number of $1 bills: 0
Number of Quarters: 1
Number of Dimes: 0
Number of Nickels: 1
Number of Pennies: 2

输出3:起始金额:9879823.92

Given an amount in dollars and cents, I will find
a combination of bills and coins:

Enter a dollar amount including cents.
9879823.92
Amount you entered in Dollars and cents: $9,879,823.92

Dollars Part of Original Amount: $9,879,823
pennies part of orginal amount: 23
Number of $100 bills: 98,798
Number of $50 bills: 0
Number of $20 bills: 1
Number of $10 bills: 0
Number of $5 bills: 0
Number of $2 bills: 1
Number of $1 bills: 1
Number of Quarters: 3
Number of Dimes: 1
Number of Nickels: 1
Number of Pennies: 1

但是，在一定数量下，产出会减少一分，主要是在便士上。
现在修改后的代码在变量启动期间发生了变化，但我不确定我是否理解我是否需要使用 orgPennies 而不是所有 orgAmount？

这是错误输出，硬币少了一分。

输出4:起始金额:111.11

Given an amount in dollars and cents, I will find
a combination of bills and coins:

Enter a dollar amount including cents.
111.11
Amount you entered in Dollars and cents: $111.11

Dollars Part of Original Amount: $111
pennies part of orginal amount: 11
Number of $100 bills: 1
Number of $50 bills: 0
Number of $20 bills: 0
Number of $10 bills: 1
Number of $5 bills: 0
Number of $2 bills: 0
Number of $1 bills: 1
Number of Quarters: 0
Number of Dimes: 1
Number of Nickels: 0
Number of Pennies: 0

也许我已经看这个问题太久了，需要离开一会儿。我确信它会非常明显，但同样，任何帮助将不胜感激。

Answer 1

        orgAmount = (long)orgAmount;
        System.out.printf("\nDollars Part of Original Amount: $%,.0f\n", orgAmount);

        //extract the pennies from in orgAmount
        orgPennies = (int)((orgAmount % 100) * 100);
        System.out.println("pennies part of orginal amount: " + orgPennies);

看起来您正在从 orgAmount 中删除小数位值，然后再尝试将值放入 orgPennies 中，orgPennies 不应该有“* 100”，然后您忘记使用 orgPennies 而不是 orgAmount 来计算便士。