C++ string()

C++中的string()是一个构造函数，用于创建一个空字符串对象。它没有参数，因此创建的字符串对象将是一个空字符串。\[2\]这个构造函数可以通过以下方式使用：

string str;

这将创建一个空字符串对象str。你可以在后续的代码中对它进行赋值或者进行其他操作。
#### 引用[.reference_title]
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