c# - Unsigned Integer Literal Having Negative Sign -


today came cross strange behaviour, explain why happens?

var x = -1u; // when using -1ul complains though. console.writeline(x.gettype().name); console.writeline(x);

output:

int64

-1

msdn says:

if literal suffixed u or u, has first of these types in value can represented: uint, ulong.

https://msdn.microsoft.com/en-us/library/aa664674%28v=vs.71%29.aspx

your confusion stems interpreting number -1, followed suffix u. it's negation - of number 1u. number 1u has type uint, indicated quote in question. negating uint produces long.


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