我正在编写一个程序，显示公司中6个不同部门的季度销售额。
我的大部分都在工作，但是当我尝试在每个季度展示销售额最高的部门时，它不起作用。
编辑：我正确地读取了所有输出，但我现在的问题是检查输入的数字是否是＆gt; = 0，我尝试过if语句和while循环并执行while循环，但我可以＆＃ 39;弄清楚。编辑2：我已更新代码以匹配我当前的代码。
import java.util.Scanner;
public class SalesByQuarter
{
public static void main(String[] args)
{
int divs = 6;
int qtrs = 4;
double totalSales = 0.0;
double errorCheck;
double[][] sales = new double[divs][qtrs];
Scanner keyboard = new Scanner(System.in);
System.out.println("This program will calculate the " +
"total sales of");
System.out.println("all the company's divisions. " +
"Enter the following sales data:");
System.out.println();
for (int div = 0; div < divs; div++)
{
for (int qtr = 0; qtr < qtrs; qtr++)
{
System.out.printf("Division %d, Quarter %d: $",
(div + 1), (qtr + 1));
errorCheck = keyboard.nextDouble();
sales[div][qtr] = errorCheck;
}
System.out.println();
}
if (errorCheck < 0)
{
System.out.println("Positive numbers only please!");
for (int div = 0; div < divs; div++)
{
for (int qtr = 0; qtr < qtrs; qtr++)
{
System.out.printf("Division %d, Quarter %d: $",
(div + 1), (qtr + 1));
errorCheck = keyboard.nextDouble();
sales[div][qtr] = errorCheck;
}
System.out.println();
}
}
else
{
for (int div = 0; div < divs; div++)
{
for (int qtr = 0; qtr < qtrs; qtr++)
{
totalSales += sales[div][qtr];
}
}
double[] divsales = new double[divs];
for (int div = 0; div < divs; div++)
{
for (int qtr = 0; qtr < qtrs; qtr++)
{
divsales[div] += sales[div][qtr];
}
System.out.printf("Division %d sales: $%,.2f\n", (div + 1), divsales[div]);
}
System.out.println();
for (int div = 1; div < divs; div++)
{
if ((divsales[div] - divsales[div - 1]) > 0)
{
System.out.printf("Division %d increase over its previous quarter: $%,.2f\n", (div + 1), divsales[div] - divsales[(div - 1)]);
}
else if ((divsales[div] - divsales[div - 1]) < 0)
{
System.out.printf("Division %d decrease from its previous quarter: $%,.2f\n", (div + 1), divsales[div] - divsales[(div - 1)]);
}
else
{
System.out.printf("Division %d had no increase or decrease from its previous quarter.\n", (div + 1));
}
}
System.out.println();
double[] qtrsales = new double[qtrs];
for (int div = 0; div < divs; div++)
{
for (int qtr = 0; qtr < qtrs; qtr++)
{
qtrsales[qtr] += sales[div][qtr];
}
}
for (int qtr = 0; qtr < qtrs; qtr++)
{
System.out.printf("Total sales for quarter: %d: $%,.2f\n", (qtr + 1), qtrsales[qtr]);
}
System.out.println();
for (int qtr = 0; qtr < qtrs; qtr++)
{
System.out.printf(" Average sale for quarter: %d: $%,.2f\n", (qtr + 1), (qtrsales[qtr] / divs));
}
System.out.println();
int highestDiv = 0;
int[] highestDivi = new int[qtrs];
for (int qtr = 0; qtr < qtrs; qtr++)
{
highestDiv = 0;
for (int div = 0; div < (divs - 1); div++)
{
if (sales[highestDiv][qtr] < sales[(div + 1)][qtr])
{
highestDiv = (div + 1);
}
}
highestDivi[qtr] = highestDiv;
}
for (int qtr = 0; qtr < qtrs; qtr++)
{
System.out.printf("Division %d had the highest sales in quarter %d\n", qtr + 1, highestDivi[qtr] + 1);
}
}
}
}
答案 0 :(得分：0)
看起来你有一些语义错误。我改变了你发现每个季度销售额最高的部门。
int highestDivi[] = new int[qtrs];
double highestDiv = 0;
for (int qtr = 0; qtr < qtrs; qtr++)
{
highestDiv = 0;
for (int div = 0; div < divs; div++)
{
if (highestDiv < sales[div][qtr])
{
highestDivi[qtr] = div;
highestDiv=sales[div][qrt];
}
}
}
关于编辑2： 我更改了用户输入销售的部分，您应该删除代码中的错误检查if语句。
for (int div = 0; div < divs; div++)
{
for (int qtr = 0; qtr < qtrs; qtr++)
{
System.out.printf("Division %d, Quarter %d: $",
(div + 1), (qtr + 1));
errorCheck = keyboard.nextDouble();
while(errorCheck<0) {
System.out.println("Positive numbers only please!");
System.out.printf("Division %d, Quarter %d: $",
(div + 1), (qtr + 1));
errorCheck = keyboard.nextDouble();
}
sales[div][qtr] = errorCheck;
}
System.out.println();
}
所有内容应如下所示
public class SalesByQuarter
{
public static void main(String[] args)
{
int divs = 6;
int qtrs = 4;
double totalSales = 0.0;
double errorCheck;
double[][] sales = new double[divs][qtrs];
Scanner keyboard = new Scanner(System.in);
System.out.println("This program will calculate the " +
"total sales of");
System.out.println("all the company's divisions. " +
"Enter the following sales data:");
System.out.println();
for (int div = 0; div < divs; div++)
{
for (int qtr = 0; qtr < qtrs; qtr++)
{
System.out.printf("Division %d, Quarter %d: $",
(div + 1), (qtr + 1));
errorCheck = keyboard.nextDouble();
while(errorCheck<0) {
System.out.println("Positive numbers only please!");
System.out.printf("Division %d, Quarter %d: $",
(div + 1), (qtr + 1));
errorCheck = keyboard.nextDouble();
}
sales[div][qtr] = errorCheck;
}
System.out.println();
}
for (int div = 0; div < divs; div++)
{
for (int qtr = 0; qtr < qtrs; qtr++)
{
totalSales += sales[div][qtr];
}
}
double[] divsales = new double[divs];
for (int div = 0; div < divs; div++)
{
for (int qtr = 0; qtr < qtrs; qtr++)
{
divsales[div] += sales[div][qtr];
}
System.out.printf("Division %d sales: $%,.2f\n", (div + 1), divsales[div]);
}
System.out.println();
for (int div = 1; div < divs; div++)
{
if ((divsales[div] - divsales[div - 1]) > 0)
{
System.out.printf("Division %d increase over its previous quarter: $%,.2f\n", (div + 1), divsales[div] - divsales[(div - 1)]);
}
else if ((divsales[div] - divsales[div - 1]) < 0)
{
System.out.printf("Division %d decrease from its previous quarter: $%,.2f\n", (div + 1), divsales[div] - divsales[(div - 1)]);
}
else
{
System.out.printf("Division %d had no increase or decrease from its previous quarter.\n", (div + 1));
}
}
System.out.println();
double[] qtrsales = new double[qtrs];
for (int div = 0; div < divs; div++)
{
for (int qtr = 0; qtr < qtrs; qtr++)
{
qtrsales[qtr] += sales[div][qtr];
}
}
for (int qtr = 0; qtr < qtrs; qtr++)
{
System.out.printf("Total sales for quarter: %d: $%,.2f\n", (qtr + 1), qtrsales[qtr]);
}
System.out.println();
for (int qtr = 0; qtr < qtrs; qtr++)
{
System.out.printf(" Average sale for quarter: %d: $%,.2f\n", (qtr + 1), (qtrsales[qtr] / divs));
}
System.out.println();
int highestDiv = 0;
int[] highestDivi = new int[qtrs];
for (int qtr = 0; qtr < qtrs; qtr++)
{
highestDiv = 0;
for (int div = 0; div < (divs - 1); div++)
{
if (sales[highestDiv][qtr] < sales[(div + 1)][qtr])
{
highestDiv = (div + 1);
}
}
highestDivi[qtr] = highestDiv;
}
for (int qtr = 0; qtr < qtrs; qtr++)
{
System.out.printf("Division %d had the highest sales in quarter %d\n", qtr + 1, highestDivi[qtr] + 1);
}
}
}
干杯！