Two ways to initialize a dynamic array with new in C + + __c++

This new feature has been introduced in c++11, that is, it can be initialized directly when a dynamic array is requested in the form of: int* p = new int[cnt] (), where the CNT length and int types can be defined by themselves.

The problem I found was:

Use int* p = new INT[CNT] () in the VC compiler () and int* p = new int[cnt]{}; Either way, and you can use int* a = new int[10] {1,2,3,4,5,6,7,8,9,10}; Each member is assigned a value.

With MinGW, which is the g++ compiler, int* p = new int[cnt]{} is not supported; The error of the hint is "extended initializer lists only available with-std=c++0x ++0x ".

That is, {} is an extension of (), preferably unified (), to avoid the pit.

At the same time this initialization is a new feature of C11, you need to verify that your GCC compiler supports C11 features.