What ist the exact issue in this code?

Question

Is this because n1 not inititalize?
//==================
var n1;
n1 = true;
Console.WriteLine(n1);

Answer 1

Yes. C# is strongly-typed and the usage of var is just a syntactic sugar over conventional data types.

Therefore the value must be initialized which allows the compiler to infer its data type upfront. 😉

Answer 2

If you use var as a type of variable, you need to initialize it to provide info for a compiler what type you meant. For example var a = someObject.method(); return type may have a long name, and you are replacing it with var.