[] []的含义是否特定于上下文？(Is the meaning of [][] context

我一直认为x [i]相当于*(x+i) 。 因此，x [i] [j]等效于*(*(x+i)+j) ，在这种情况下暗示必须将2D数组实现为指针数组，这些指针中的每一个都必须被解除引用。

但我了解到你可以这样在堆上创建一个2D数组：

如果前一假设是正确的，则arr [i] [j]将访问未经授权的位置（因为我们解除引用两次）。

在2d数组的情况下，我的前假设是错误的吗？

I always thought that x[i] is equivalent to *(x+i). So that would x[i][j] is equivalent to *(*(x+i)+j), which is in this case implies that a 2D array must be implemented as an array of pointers, each of these pointers has to be dereferenced.

But I learned that you can create a 2D array on the heap this way :

If the former hypothesis is right, then arr[i][j] would access an unauthorized location (since we are dereferencing two times).

Is my former hypothesis wrong in case of 2d arrays ?