JAVA 零钱

Question

我正在尝试编写一个输出零钱的代码，如下所示：

**.00 remains to be paid. Enter coin or note: 0.00

  You gave 0.00

Your change:

1 x .00

2 x .00

0 x .00

0 x .00

1 x .00

1 x .00

  **

但输出应该是相同的但不显示 0 值，例如它应该是这样的：

**.00 remains to be paid. Enter coin or note: 0.00

  You gave 0.00

Your change:

1 x .00

2 x .00

1 x .00

1 x .00
  **

我的找零代码看起来像这样，使用 if 语句：

  double fiftyDollars, twentyDollars, tenDollars, fiveDollars, twoDollars, oneDollar, fiftyCents, twentyCents, tenCents, fiveCents;

        fiftyDollars = change / 50.00; //dividing change by
        change = change % 50.00; //get remainder of the change
                if(fiftyDollars > 0) {
                    System.out.println((int) fiftyDollars + " x .00"); //getting output as integer- casting
                }

                twentyDollars = change / 20.00;
        change = change % 20.00;
                if (twentyDollars > 0){
                    System.out.println((int) twentyDollars + " x .00");
                }

        tenDollars = change / 10.00;
        change = change % 10.00;
                if (tenDollars >0) {
                    System.out.println((int) tenDollars + " x .00");
                }

        fiveDollars = change / 5.00;
        change = change % 5.00;
                if(fiveDollars > 0) {
                    System.out.println((int) fiveDollars + " x .00");
                }

        twoDollars = change / 2.00;
        change = change % 2.00;
                if (twoDollars >0) {
                    System.out.println((int) twoDollars + " x .00");
                }

        oneDollar = change / 1.00;
        change = change % 1.00;
                if(oneDollar >0) {
                    System.out.println((int) oneDollar + " x .00");
                }

        fiftyCents = change / 0.5;
        change = change % 0.5;
                if (fiftyCents >0) {
                    System.out.println((int) fiftyCents + " x [=13=].50");
                }

        twentyCents = change / 0.2;
        change = change % 0.2;
                if(twentyCents > 0) {
                    System.out.println((int) twentyCents + " x [=13=].20");
                }

        tenCents = change / 0.1;
        change = change % 0.1;
                if (tenCents > 0){
                    System.out.println((int) tenCents + " x [=13=].10");
                }

        fiveCents = change / 0.05;
        change = change % 0.05;
                if (fiveCents > 0){
                    System.out.println((int) fiveCents + " x [=13=].05");
                }

非常感谢你们的帮助！谢谢

Answer 1

您使用的是双精度值，因此 0 值介于 0 和 1 之间，如果您在 if 子句中将 double 转换为 ints，您的程序应该可以正常工作。

Answer 2

您可以检查等于或大于 1 的值。

如另一个答案所述，您正在处理 double 值，因此 >0 将匹配 0.1 、 0.56 等 ..

所以 :

if (tenDollars >= 1)

Answer 3

像这样更改所有 if 条件

if(fiftyDollars > 0) {

到

if((int)fiftyDollars > 0) {

JAVA 零钱

JAVA money change

java

if-statement

output