数学取整要求 [英] Math Rounding Requirement

问题描述

我有一个要求，其中四舍五入为.5及以下的小数，并四舍五入为.6及以上.让我用一个例子来解释你.

13.5-> 13.0是期望值
13.6-> 14.0是期望值

现在我应该编写代码还是在c#中有任何内置功能.<​​br/>
请确认



意思是

13.4-> 13是期望值
13.5-> 13是期望值
13.6-> 14是期望值

请确认我是否必须编码或是否有任何内置功能

Hi,

I have a requirement where decimal with .5 and less should be rounded down and decimal with .6 and above should be rounded up. Let me explain you with an example.

13.5 --> 13.0 is the expected value
13.6 --> 14.0 is the expected value

Now should i have to code it or is there any built in functionality in c#.

Please confirm



What is meant is

13.4 --> 13 is the expected value
13.5 --> 13 is the expected value
13.6 --> 14 is the expected value

Please confirm if i have to code or is there any in built functionality

推荐答案

double num = 5.5;
     int intpart = (int)num;
     double decpart = num - intpart;
     if (decpart > .5)
     {
         intpart = intpart + 1;
     }

这是你的答案

快乐的编码;)

here is your answer

happy coding ;)

Math.Round [ ^ ]

尝试这个逻辑..

Try this logic..

double val = Convert.ToDouble(textBox1.Text);
MessageBox.Show(Math.Round((val % .5) == 0 ? (val - 0.1) : val).ToString());

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