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double gg=80.808;
double x=Math.Floor(gg);
double num = 80.808;
console.WriteLine(int.Parse(num.toString().Split('.')[1]));
double gg = 80.808;
int gx=Convert.ToInt32(gg.ToString("#"));//这个是会四舍五入
int gy = Convert.ToInt32(gg.ToString().Substring(0,gg.ToString().IndexOf('.')));//直接截取