数学取整要求

本文介绍了数学取整要求的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 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. 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());