Question

这是一个学校项目，我应该制作一个计算总金额的程序。结果我持续0。我做错了什么？谢谢！

package com.david.scanner;
import java.util.Scanner;

public class coin {
    public static void main (String[] Args){

        int quarters = 0;
        int dimes = 0;
        int nickels = 0;
        int pennies = 0;
        int totalCents = 0;
        int dollars = 0;
        int cents = 0;

        totalCents = (quarters*25 + dimes*10 + nickels*5 + pennies);
        dollars = (totalCents/100);
        cents = (totalCents%100);

        @SuppressWarnings("resource")
        Scanner keyboard = new Scanner(System.in);
        System.out.print("How many quarters do you have -->");
        quarters = keyboard.nextInt();
        System.out.println("How many dimes do you have -->");
        dimes = keyboard.nextInt();
        System.out.println("How many nickels do you have -->");
        nickels = keyboard.nextInt();
        System.out.println("How many pennies do you have -->");
        pennies = keyboard.nextInt();

        System.out.println("Quarters = " + quarters);         
        System.out.println("Dimes = " + dimes);         
        System.out.println("Nickels = " + nickels);
        System.out.println("Pennies = " + pennies);    
        System.out.println("Total value =" + dollars + "dollars " + cents + "cents!"); 

    }
}

Answer 1

在获得实际值之前，您已经进行了计算。移动

totalCents = (quarters*25 + dimes*10 + nickels*5 + pennies);
dollars = (totalCents/100);
cents = (totalCents%100);

在您接受输入并指定quarters到pennies之后，但在最终输出之前。

Answer 2

将此代码设为totalCents = (quarters*25 + dimes*10 + nickels*5 + pennies); dollars = (totalCents/100); cents = (totalCents%100);
在pennies = keyboard.nextInt();行之后，它获取您在命令行输入的值。现在所需的输出为：

D:\>javac coin.java

D:\>java coin
How many quarters do you have -->3
How many dimes do you have -->
4
How many nickels do you have -->
5
How many pennies do you have -->
5
Quarters = 3
Dimes = 4
Nickels = 5
Pennies = 5
Total value =1dollars 45cents!

Answer 3

是的，你必须把你的计算B \ W和它起作用

System.out.println("Quarters = " + quarters);         
System.out.println("Dimes = " + dimes);         
System.out.println("Nickels = " + nickels);
System.out.println("Pennies = " + pennies);     
totalCents = (quarters*25 + dimes*10 + nickels*5 + pennies);
dollars = (totalCents/100);
cents = (totalCents%100);
System.out.println("Total value =" + dollars + "dollars " + cents + "cents!");

结果我持续0

3 个答案: