win10修改不了权限:VB 初学者求助

来源:百度文库 编辑:神马品牌网 时间:2024/05/05 20:37:33
dim dbl as double 和 dim dbl as new double 有什么区别?

dim dbl as double只是声明并未实例化,你还需要再实例化一下。而dim dbl as new double 是声明并实例化。

dim dbl as double是声明dbl为double 类型
而dim dbl as new double 是声明并实例化.