我正在计算下面的一个数字。当它应该是83.12454时，我一直得到0。
我想我想要一个Double变量类型。下面我做错了什么？一旦我得到值，我就需要修剪小数。
Ratings GetNoVotes = new Ratings();
int DATotalYesVotes = GetNoVotes.GetTotalNOVotes(1, yesPictureId); //80
int DaTNoVotes = GetNoVotes.GetTotalNOVotes(2, yesPictureId); //15
int DaTotalVotes = DATotalYesVotes + DaTNoVotes; //95
double Percentage = (DATotalYesVotes / DaTotalVotes)*100; //84.2105
// Math.Round(Percentage);
TotalyesVotes.Text = Percentage.ToString();
问题是DATotalYesVotes是一个小于DaTotalVotes的整数。因为/的意思是整数除法，所以它在乘以100之前先四舍五入。以下是两种方法：
（1） 先乘以100（仍然有一些舍入误差，但不多）
double Percentage = (DATotalYesVotes * 100 / DaTotalVotes);
（2） 先选替身
double Percentage = ((double)DATotalYesVotes / (double)DATotalVotes)*100;
在划分之前，您需要将DATotalYesVotes和DaTotalVotes转换为两倍：
double Percentage = ((double)DATotalYesVotes / (double)DaTotalVotes)*100.0;
换句话说，2个int的除法将产生第三个（并被截断）int。
整数除法得到一个零的整数结果，然后将其乘以100。尝试对其中一个数字进行双精度铸造。
double Percentage = ((double)DATotalYesVotes / DaTotalVotes)*100;
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