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This article mainly explains "Why don't compare element addresses in different arrays in C++?" interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn why you don't compare the addresses of elements in different arrays in C++.

ES.62: do not compare element addresses in different arrays

Reason (reason)

The result of doing so is undefined.

The result of this is undefined.

Example, bad (negative example)

Void f ()

{

Int a1 [7]

Int a2 [9]

If (& A1 [5] < & a2 [7]) {} / / bad: undefined

If (0 < & A1 [5]-& a2 [7]) {} / / bad: undefined

} Note (note)

This example has many more problems.

The sample code also contains many other issues.

At this point, I believe you have a deeper understanding of "why not compare element addresses in different arrays in C++". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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