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a) C# da Nullable turlari nima uchun ishlatiladi?
ma'lumotlar bazasidan ma'lumot olishda yoki qiymatning yo'qligini tekshirishda.
b) Quyidagi kodning natijasi nima bo'ladi?
int? z = null;
if(z.HasValue)
{
Console-WriteLine(z.Value):
}
else
{
Console WriteLine("z is null");
}
blmima
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