C# Compiler thinks these variables should be initialized -

C# Compiler thinks these variables should be initialized -

here sample of application i'm writing:

bool x3k = false, y3k = false; // of these functions homecoming nullable ints (int?) var comparing = dosomething(x, y) ?? dosomething2(x, y) ?? dosomething3(x, y, out x3k, out y3k) ?? dosomething4(x, y) ?? dosomething5(x, y); if (comparison.hasvalue) homecoming comparison.value; if (x3k) // compiler error here if don't init x3k { }

i don't understand, in null coalescing chain, how x3k uninitialized if comparison null , don't homecoming early. what's going on here?

you encountering short-circuit behavior: if dosomething or dosomething2 homecoming non-null, dosomething3 never execute, leaving x3k , y3k uninitialized.

c#