2.1 有名有姓的C
C语言的标识符可以是由 字母,数字,下划线构成。但是,开头必须是字母或者是下划线。
(1)最好不要超过8位
(2)严格区分大小写
(3)最好做到见名知意
(4)不要和一些C语言的关键字在一起使用。
2.3 变量及赋值
变量占据内存中一定的储存单元,使用变量前必须先定义好变量。
变量的定义类型是:数据类型 变量名
多个变量的定义类型是:数据类型 变量名 变量名 变量名
C yuyan
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