在C#中,int和string的区别是什么?还有什么时候用int什么时候用string? 我看了一个语句 int hour = DateTime.Now.Hour; string h, m, s; h = DateTime.Now.Hour.ToString(); m = DateTime.Now.Minute.ToString(); s = DateTime.Now.Second.ToString(); if (s.Length < 2) { s = "0" + s; } if (m.Length < 2) { s = "0" + s; } if (hour < 7) { h = "清晨" + h; } else if (hour < 12) { h = "中午" + h; } else if (hour < 18) { h = "下午" + h; } else h = "晚上" + h; this.TextBox1.Text = h; 为什么hors是整型,h,m,s是字符串? 整型 和字符串的互相转换用convert? 我才学.net,希望和大家互相成长,还希望大家多多帮忙。谢谢 |