我在上课时遇到了麻烦。我需要能够在输入某些数据后打印销售报告，并确定跟踪所有内容的最佳方法是使用数组。
我一直试图弄清楚这几个小时，我很难过。任何帮助将不胜感激。
供参考，用户需要输入：
然后它应该循环回到事务编号并继续该循环，直到将值0作为事务编号的输入。
然后它应该循环回员工姓名并继续回到该循环，直到Done作为员工姓名的输入。
这是代码（我认为这是唯一相关的部分，但是如果你想看到我可以发布的整段代码。）
再次感谢您的所有帮助或建议！
void salesData() throws IOException {
for (int i = 0; i < 100; i++) {
System.out.print("Enter Name: ");
n = stdin.readLine();
if (n.equalsIgnoreCase("done")) {
break;
}
else {
System.out.print("Enter Transaction Number: ");
t = Integer.parseInt(stdin.readLine());
if (t == 0) {
break;
}
else {
System.out.print("Enter Transaction Type: ");
tp = stdin.readLine();
System.out.print("Enter Transaction Amount: ");
a = Double.parseDouble(stdin.readLine());
totSales = totSales + a;
totYtd = totYtd + a;
empTotal = empTotal + a;
empBonus = empBonus + (a * 0.05);
name[i] = n;
ytd[i] = y;
tNum[i] = t;
type[i] = tp;
amount[i] = a;
outputUpdate();
calcSalesData();
}
}
}
outputSalesData();
}
好的，所以我一直在努力，感谢你们的帮助，我取得了很大的进步。但仍有一个问题。该数组仅保存为每个员工输入的最后一笔交易的转账号码，类型和金额，而不是每笔交易。
我认为错误是我需要以与name和ytd数组不同的速率迭代数组的tNum，type和amount？
还有一点麻烦所以任何帮助都表示赞赏...这是我的更新代码以及最后的打印声明。
void salesData() throws IOException {
for (int i = 0; i < 100; i++) {
System.out.print("Enter Name: ");
n = stdin.readLine();
if (n.equalsIgnoreCase("done")) {
outputSalesData();
}
System.out.print("Enter Year to Date Sales: ");
y = Double.parseDouble(stdin.readLine());
ytdSales = ytdSales + y;
totYtd = totYtd + ytdSales;
while (t != 0) {
System.out.print("Enter Transaction Number: ");
t = Integer.parseInt(stdin.readLine());
if (t == 0) {
t = 1;
empBonus = 0;
ytdSales = 0;
break;
}
else {
System.out.print("Enter Transaction Type: ");
tp = stdin.readLine();
System.out.print("Enter Transaction Amount: ");
a = Double.parseDouble(stdin.readLine());
totSales = totSales + a;
totYtd = totYtd + a;
ytdSales = ytdSales + a;
empTotal = empTotal + a;
empBonus = empBonus + (a * 0.05);
name[i] = n;
ytd[i] = y;
tNum[i] = t;
type[i] = tp;
amount[i] = a;
outputUpdate();
calcSalesData();
tCount++;
}
}
}
}
这是印刷品：
void rptOut() {
System.out.println("");
System.out.println("--------------------------------------------");
System.out.println("Employee:\tYTD:\t\tT #:\tType:\tAmount:");
while (index < tCount)
{
System.out.println(name[index] + "\t\t$" + df2.format(ytd[index]) + "\t" + tNum[index] + "\t" + type[index] + "\t$" + amount[index]);
index++;
}
System.out.println("--------------------------------------------");
System.out.println("Total Food & Soft Drink Sales: \t$" + df2.format(totF));
System.out.println("Total Alcohol Sales: \t\t$" + df2.format(totA));
System.out.println("Total Sundries Sales: \t$" + df2.format(totS));
System.out.println("--------------------------------------------");
System.out.println("Total Sales for Day: \t$" + df2.format(totSales));
System.out.println("Total YTD: \t\t$" + df2.format(totYtd));
System.out.println("--------------------------------------------");
System.out.println("Highest Trans Amount: \t$" + df2.format(hiTrans));
System.out.println("Employee w/ Highest Trans: \t" + hiEmp);
System.out.println("--------------------------------------------");
//System.exit(0);
}
答案 0 :(得分：1)
根据我的收集，您希望将Sales Report的值存储到数组中，其中Array name，Array ytd，Array tNum和Array type都包含特定Sales Report的值。现在，为了使用这个概念，您需要确保索引0在整个镜像阵列中引用相同的Sales Report数据。
Sales Report 0 = {name[0], ytd[0], tNum[0], type[0]}
Sales Report 1 = {name[1], ytd[1], tNum[1], type[1]}
etc....
要执行此操作，您可以使用单个for循环。请尝试以下
void salesData() throws IOException {
for (int srIndex = 0; srIndex < 100; srIndex++)
{
System.out.print("Enter Name: ");
n = stdin.readLine();
name[srIndex] = n;
System.out.print("Enter Year to Date Sales: ");
y = Double.parseDouble(stdin.readLine());
ytd[srIndex] = y;
totYtd = totYtd + y;
System.out.print("Enter Transaction Number: ");
t = Integer.parseInt(stdin.readLine());
if (t == 0) {
break;
} else {
tNum[srIndex] = t;
}
System.out.print("Enter Transaction Type: ");
tp = stdin.readLine();
type[srIndex] = tp;
System.out.print("Enter Transaction Amount: ");
a = Double.parseDouble(stdin.readLine());
totSales = totSales + a;
totYtd = totYtd + a;
empTotal = empTotal + a;
empBonus = empBonus + (a * 0.05);
calcSalesData();
outputSalesData();
//ask to enter another sales report
System.out.print("Do you want to enter another Sales Report? (yes)");
String userInput = stdin.readLine();
if(!userInput.equalsIgnoreCase("yes"))
break;
}
}
要清理代码，可以创建一个方法来为您获取值。因此，对于您的交易价值，您可以创建类似的方法
public double getSalesReportTransaction()
{
System.out.print("Enter Transaction Amount: ");
return Double.parseDouble(stdin.readLine());
}
为Sales Report中的每个值创建一个方法，这是清理for循环中代码的好方法。
最后，我建议为您的销售报告创建一个类，并创建这些Sales Report对象的容器。但我不确定你对课程有多了解并将其排除在外。
Here is a link to Java Classes
要循环直到为事务输入0，您可以在else块中执行以下操作
while(true)
{
System.out.print("Enter Transaction Number: ");
t = Integer.parseInt(stdin.readLine());
if (t == 0) {
break;
}
else {
System.out.print("Enter Transaction Type: ");
tp = stdin.readLine();
System.out.print("Enter Transaction Amount: ");
a = Double.parseDouble(stdin.readLine());
totSales = totSales + a;
totYtd = totYtd + a;
empTotal = empTotal + a;
empBonus = empBonus + (a * 0.05);
name[i] = n;
ytd[i] = y;
tNum[i] = t;
type[i] = tp;
amount[i] = a;
outputUpdate();
calcSalesData();
}
}