c++初学者有必要深挖这样的问题吗？ 第1页

不用什么深挖，因为这就是：规定

这是C++03的版本（2.13.4.1）：

A string literal is a sequence of characters (as defined in 2.13.2) surrounded by double quotes, optionally beginning with the letter L,asin"..."or L"...". A string literal that does not begin with L is an ordinary string literal, also referred to as a narrow string literal. An ordinary string literal has type “array of n const char” and static storage duration (3.7), where n is the size of the string as defined below, and is initialized with the given characters. A string literal that begins with L, such as L"asdf", is a wide string literal. A wide string literal has type “array of n const wchar_t” and has static storage duration, where n is the size of the string as defined below, and is initialized with the given characters.

至于很多人回答的：严格按照C++语法你的代码会编不过的原因，也已经用黑体给你标了。

其他版本的C++，甚至c的，自己也可以下载个标准文本，然后用“string literal”这个关键字去搜。

btw：

这种东西在我看来不值得花什么精力去深究，因为它本质上就是一个可以让大家更便于编写代码，也让代码更好读的语法糖。

毕竟你可以老老实实的写一个字符数组，然后用strcpy初始化。最后等着编译器发现这个变量可以执行编译优化，最终优化成一个指向常量的指针，在结果上是一样的——当然，有没有这么牛X的编译器，倒是个问题。