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                ## [**C#中的Var類型**](https://www.cnblogs.com/asdyzh/p/9741646.html) 傳統定義變量是已經知道變量的類型,如: int a = 1; string b = "qwer"; 用Var類型預先不用知道變量的類型;根據你給變量賦值來判定變量屬于什么類型;如 var a =1; 則a是整型,`var a = "qwer"`;則a是字符型,但使用Var類型要注意: 1:必須在定義時初始化,即不能先定義后初始化,如:`var a;a = 1`;這樣是不允許的 2:一旦初始化完成,不能再給變量賦與初始化不同的變量 3:var類型的變量必須是局部變量
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