问题描述
我如何初始化一个指针数组常量?结果
我想*格指向新分配的int数组{1,2,3}
How do I initialize a pointer to a literal array?
I want *grid to point to the new allocated int array {1, 2, 3}.
int *grid = new int[3];
*grid = {1, 2, 3};
感谢您。
推荐答案
您不能的初始化的动态分配的数组的方式。你也不能的分配的以这种方式数组(动态或静态)。在初始化静态数组,即这种语法才有效。
You can't initialize a dynamically allocated array that way. Neither you can assign to an array(dynamic or static) in that manner. That syntax is only valid when you initialize a static array, i.e.
int a[4] = {2, 5, 6, 4};
我的意思是,即使下面是非法的:
What I mean is that even the following is illegal:
int a[4];
a = {1, 2, 3, 4}; //Error
在你的情况,你可以做什么,但通过手工复制的每个元素的velue
In your case you can do nothing but copy the velue of each element by hand
for (int i = 1; i<=size; ++i)
{
grid[i-1] = i;
}
您可能会避免外在的循环使用STL算法,但想法是一样的。
You might avoid an explicit loop by using stl algorithms but the idea is the same
其中一些可能已经成为C ++ 0x中的法律,我不知道。
Some of this may have become legal in C++0x, I am not sure.
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