如何总结while循环中的结果而centain输入将结束while循环? [英] How to sum up the resultes in a while loop while centain input will end the while loop?

问题描述

我在java中有一个情况；

I have a situation in java;

我想请用户输入一些数字&总共有这些数字.但是，如果用户输入负数，它将结束循环；

I would like to ask the user to put in some numbers & have a total of those numbers. However if the user enter a negative number it will end the loop;

目前我有一个如下所示的while循环；

currently I have a while loop as below;

                double sum = 0;
    double Input = 0;
    System.out.println("Please enter the numbers (negative to end)")
    System.out.println("Enter a number");
    Scanner kdb = new Scanner(System.in);
          Input = kdb.nextDouble();
    while (Input > 0)
    {
        System.out.println("Enter an income");
        Input = kdb.nextDouble();
        sum = Input;
    }

但是它并没有完成这项工作.如果用户输入 40、60、50 和 -1，则正确的结果应该是 150；我的循环结果为 109.

However it does not do the job. If the user put in 40,60,50, and -1 the correct result should be 150; my loop result in 109.

请帮忙！

非常感谢！杰基

推荐答案

double sum = 0;
double Input = 0;
System.out.println("Please enter the numbers (negative to end)")
System.out.println("Enter a number");
Scanner kdb = new Scanner(System.in);
Input = kdb.nextDouble();
while (Input > 0)
{
    sum += Input;
    System.out.println("Enter an income");
    Input = kdb.nextDouble();
}

我建议变量名不要以大写字母开头.

I recommend variable names not to start with upper case letters.

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