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Что выведет следующий код на C#?


using System;

class Program {
static void Main() {
int a = 1000;
int b = 1000;

object x = a;
object y = b;

Console.WriteLine(x == y); // #1
Console.WriteLine(x.Equals(y)); // #2
}
}


🔢 Варианты ответа:

A)

True


B)

False


C)

True


D)

False


Правильный ответ: C

💡 Почему?

-
x и y — boxed значения типа int, то есть ссылки на два разных объекта в куче.
-
x == y сравнивает ссылки, а не значения → False.
-
x.Equals(y) вызывает метод Equals для int, который сравнивает значения → True.

📌 Подвох — в различии
== и .Equals() при использовании упакованных типов.

@csharp_ci



tg-me.com/csharp_ci/1336
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Что выведет следующий код на C#?


using System;

class Program {
static void Main() {
int a = 1000;
int b = 1000;

object x = a;
object y = b;

Console.WriteLine(x == y); // #1
Console.WriteLine(x.Equals(y)); // #2
}
}


🔢 Варианты ответа:

A)

True


B)

False


C)

True


D)

False


Правильный ответ: C

💡 Почему?

-
x и y — boxed значения типа int, то есть ссылки на два разных объекта в куче.
-
x == y сравнивает ссылки, а не значения → False.
-
x.Equals(y) вызывает метод Equals для int, который сравнивает значения → True.

📌 Подвох — в различии
== и .Equals() при использовании упакованных типов.

@csharp_ci

BY C# (C Sharp) programming


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