alt Hacker NewsThe difference is that in the unsigned case you get a seemingly plausible value, and in the signed case you get a negative value which you can be sure is wrong. This is the problem.
The difference is that in the unsigned case you get a seemingly plausible value, and in the signed case you get a negative value which you can be sure is wrong. This is the problem.
In some languages, the signed version is undefined behavior. You may get a negative value, INT_MAX / 2, or an error. Or the compiler may detect the undefined behavior, which according to the standard cannot happen, and mutilate your code in unexpected ways.