在构造函数初始化程序中确定数组大小

2022-01-18 00:00:00 arrays initialization constructor c++

在下面的代码中，我希望在调用 Class 构造函数时将数组定义为大小为 x 的数组.我该怎么做?

In the code below I would like array to be defined as an array of size x when the Class constructor is called. How can I do that?

class Class
{
public:
  int array[];
  Class(int x) : ??? { }
}

推荐答案

你不能用在编译时无法计算的非常量维度来初始化数组的大小(至少在当前的 C++ 标准中不是这样), AFAIK).

You can't initialize the size of an array with a non-const dimension that can't be calculated at compile time (at least not in current C++ standard, AFAIK).

我建议使用 std::vector<int> 而不是数组.它为大多数操作提供了类似数组的语法.

I recommend using std::vector<int> instead of array. It provides array like syntax for most of the operations.

相关文章