C++ Builder 2010中的nullptr
在C++ Builder 2010的IDE中把nullptr显示成蓝色，表示IDE认为nullptr是一个关键字，但在编译的时候，却报错E2451 Undefined symbol 'nullptr'

那么在C++ Builder 2010中到底能不能使用nullptr？怎样使用？

[解决办法]
cb2010的帮助：

Reserved for future use. nullptr is a literal that can be assigned to any pointer to indicate the pointer doesn't point to anything.


Warning: C++Builder does not implement nullptr but does treat it as a keyword when the -Ax compiler flag is set. Do not use nullptr as an identifier.
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Category: C++ Reference