When to use different integer types?

Question

Programming languages (e.g. c, c++, and java) usually have several types for integer arithmetic:

• signed and unsigned types
• types

Answer 1

Typically, you use int, unless you need to expand it because you need a larger range or you want to shrink it because you know the value only makes sense in a smaller range. It's incredibly rare that you would need to change due to memory considerations- the difference between them is miniscule.