Use new operator to initialise an array

c++ arrays new-operator
lilroo picture lilroo · Mar 7, 2012 · Viewed 66.6k times · Source

I want to initialise an array in the format that uses commas to separate the elements surrounded in curly braces e.g:

int array[10]={1,2,3,4,5,6,7,8,9,10};

However, I need to use the new operator to allocate the memory e.g:

int *array = new int[10];

Is there a way to combine theses methods so that I can allocate the memory using the new operator and initialise the array with the curly braces ?

Answer

jogojapan picture jogojapan · Mar 7, 2012

In the new Standard for C++ (C++11), you can do this:

int* a = new int[10] { 1,2,3,4,5,6,7,8,9,10 };

It's called an initializer list. But in previous versions of the standard that was not possible.

The relevant online reference with further details (and very hard to read) is here. I also tried it using GCC and the --std=c++0x option and confirmed that it works indeed.

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