Pointer element access

A pointer-element-access consists of a primary-no-array-creation-expression followed by an expression enclosed in "[" and "]". pointer-element-access : primary-no-array-creation-expression[expression]
In a pointer element access of the form P[E], P must be an expression of a pointer type other than void*, and E must be an expression of a type that can be implicitly converted to int, uint, long, or ulong.
A pointer element access of the form P[E] is evaluated exactly as *(P + E). For a description of the pointer indirection operator (*), see 25.5.1. For a description of the pointer addition operator (+), see 25.5.6.
[Example: In the example class Test { static void Main() { unsafe { char* p = stackalloc char[256]; for (int i = 0; i < 256; i++) p[i] = (char)i; } } } a pointer element access is used to initialize the character buffer in a for loop. Because the operation P[E] is precisely equivalent to *(P + E), the example could equally well have been written: class Test { static void Main() { unsafe { char* p = stackalloc char[256]; for (int i = 0; i < 256; i++) *(p + i) = (char)i; } } } end example]
The pointer element access operator does not check for out-of-bounds errors and the behavior when accessing an out-of-bounds element is undefined.

[Note: This is the same as C and C++. end note]