Does var y = 15; not automatically declare y as an int?

Question

Hi, I'm new to C#.

The SoloLearn question is:
Fill in the blanks to declare two variables of type int and display their sum to the screen.

int x = 8;
__ y = 15;
Console.WriteLine(x _ y);

So I know int y = 15 and x + y will work, but using var y = 15 also gives you 23 and wont y then also be declared as an int?

Answer 1

It does work but sololearn expects int as answer I think

Answer 2

int x = 8;
int y = 15;
Console.WriteLine(x + y);