C#中取整,向上取,向下取

Math.Ceiling()向上取整,Math.Floor()向下取整 
示例:
d = 4.56789
string res = Math.Ceiling(Convert.ToDecimal(d)).ToString()
或string res = Math.Ceiling(Convert.ToDouble(d)).ToString();
res为5 string res = Math.Floor(Convert.ToDecimal(d)).ToString()
或string res = Math.Floor(Convert.ToDouble(d)).ToString(); res为4
posted @ 2018-01-15 12:31  沙耶  阅读(584)  评论(0编辑  收藏  举报