Datatypes - General Questions

What is the output of the following program?

double d = 9.99;
int i = (int)d;
Console.WriteLine(i);

What is the output of the following program?

var s = "text";
Console.WriteLine(s.GetType().Name);

What is the output of the following program?

int? x = null;
Console.WriteLine(x ?? 10);

What is the output of the following program?

int a = 7, b = 2;
Console.WriteLine(a / b);
Console.WriteLine(a / 2.0);

What is the output of the following program?

char c = 'A';
Console.WriteLine((int)c + 1);