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int? i = null;
Console.WriteLine((i == 0).ToString()); //false
Console.WriteLine((i > 0).ToString()); //false
Console.WriteLine((i < 0).ToString()); //false
Console.WriteLine((i != 0).ToString()); //true
Console.WriteLine((i == null).ToString()); //true
int j = i ?? 2; //j=2
i = 3;
int k = i ?? 2; //k=3
public static int? GetMagazineMagColony(string magCode)
{
return null; // you may return null
}
public static int GetMagazineMagColony(string magCode)
{
return null; // error! you must return an integer
}