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19 年
# 第3章 字符串、向量和数组
使用`using`声明后就无须再通过专门的前缀去获取所需的名字了。 程序中使用的每个名字都需要用独立的`using`声明引入。 头文件中通常不应该包含`using`声明。 ## 标准库类型`string`(Library `string` Type) 标准库类型`string`表示可变长的字符序列,定义在头文件`string`中 ...
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