A string is equivalent to a sequence of char, while a wstring represents a sequence of wchar.

string等价于char的序列，而wstring表示wchar的序列。

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Char or wchar conventions determine the size of the element types with string represented by 8-bit quantities and wstring 16-bit or greater.

char或wchar约定确定了类型为string的元素大小由8个字节表示，wstring类型的元素大小是16个字节或更多。

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Char or wchar conventions determine the size of the element types with string represented by 8-bit quantities and wstring 16-bit or greater.

char或wchar约定确定了类型为string的元素大小由8个字节表示，wstring类型的元素大小是16个字节或更多。

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