How does C++ use signed numbers for mathematical operations

This article introduces the knowledge of "how C++ uses signed numbers for mathematical operations". In the operation of actual cases, many people will encounter such a dilemma. Next, let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

ES.102: use signed numbers for mathematical operations

Reason (reason)

Because most mathematical operations are signed. When x > y, xmury returns a negative number, and in rare cases what is actually required is a modular operation.

Example (sample)

If you don't do it intentionally, unsigned operations can produce unexpected results. If you mix signed and unsigned numbers, the problem will be more obvious.

Template

T subtract (T x, T 2y)

{

Return x-y

}

Void test ()

{

Int s = 5

Unsigned int us = 5

Cout