Can a class or a struct have multiple constructors?

1 Answer

Answer :

Yes, a class or a struct can have multiple constructors. Constructors in C# can be overloaded.

Related questions

Description : What is the difference between a Struct and a Class? 

Last Answer : Structs are value-type variables and are thus saved on the stack, additional overhead but faster retrieval. Another difference is that structs cannot inherit.

Description : What is the difference between a Struct and a Class?

Last Answer : Structs are value-type variables and are thus saved on the stack, additional overhead but faster retrieval. Another difference is that structs cannot inherit.

Description : If a base class has a number of overloaded constructors, and an inheriting class has a number of overloaded constructors; can you enforce a call from an inherited constructor to a specific base constructor?

Last Answer : Yes, just place a colon, and then keyword base (parameter list to invoke the appropriate constructor) in the overloaded constructor definition inside the inherited class.

Description : In terms of constructors, what is the difference between: public MyDerived() : base() an public MyDerived() in a child class?

Last Answer : Nothing

Description : If a base class has a number of overloaded constructors, and an inheriting class has a number of overloaded constructors; can you enforce a call from an inherited constructor to a specific base constructor?

Last Answer : Yes, just place a colon, and then keyword base (parameter list to invoke the appropriate constructor) in the overloaded constructor definition inside the inherited class.

Description : If a base class has a bunch of overloaded constructors, and an inherited class has another bunch of overloaded constructors, can you enforce a call from an inherited constructor to an arbitrary base constructor? 

Last Answer : Yes, just place a colon, and then keyword base (parameter list to invoke the appropriate constructor) in the overloaded constructor definition inside the inherited class. 

Description : Can you derive from a struct? 

Last Answer : No

Description : Can a struct have methods?

Last Answer : Yes

Description : Is a struct stored on the heap or stack? 

Last Answer : Stack

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Last Answer : Unlike in C++ a struct is not a class – it is a value type with certain restrictions. It is usually best to use a struct to represent simple entities with a few variables. Like a Point for example which contains variables x and y.

Description : What is the default accessibility for members of a struct? 

Last Answer : private

Description : Explain what constructors and destructors are and describe what they are used for.

Last Answer : The constructor is the method that initializes a class or structure and is run when a type is first instantiated. It is used to set default values and perform other tasks required by the class. ... reclaimed by garbage collection. It contains any code that is required for cleanup of the object. 

Description : Can base constructors can be private?

Last Answer : Yes

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Last Answer : Two. Once you write at least one constructor, C# cancels the freebie constructor, and now you have to write one yourself, even if there’s no implementation in it.

Description : Define what are constructors and destructors?

Last Answer : Constructors and destructors are special methods. Constructors and destructors are special methods for every class. Each class has its own constructor and destructor and are called automatically when the ... access the class and the destructor destroys them when the objects are not required anymore.

Description : Can you have parameters for static constructors?

Last Answer : No, static constructors cannot have parameters.

Description : Explain multiple constructors in a class with suitable example. 

Last Answer : Multiple constructors in a class means a class can contain more than one constructor. This is also known as constructor overloading. All constructors are defined with the same name as the class they belong to. All the ... default constructor integer(int a, int b) { m = a; n = b; cout

Description : Virtual constructor: Constructors cannot be virtual. Declaring a constructor as a virtual function is a syntax error. Does c++ support multilevel and multiple inheritance?

Last Answer : Yes.

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Last Answer : No, once the proper catch code fires off, the control is transferred to the finally block (if there are any), and then whatever follows the finally block. 

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Last Answer : No. 

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Last Answer : It’s up to you to implement the method inside your own class, so implementation is left entirely up to you. This might cause a problem on a higher-level scale if similarly named methods from different interfaces expect different data, but as far as compiler cares you’re okay. To Do: Investigate 

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Last Answer : Yes. .NET does support multiple interfaces. 

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Last Answer : No. Once the proper catch block processed, control is transferred to the finally block (if there are any). 

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Last Answer : No.

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Last Answer : No. 

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Last Answer : Yes

Description : Does C# supports multiple inheritance? 

Last Answer : No

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Last Answer : Yes – e.g. for (int i = 1; j = 2;i

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Last Answer : Yes

Description : What happens if you inherit multiple interfaces and they have conflicting method names?

Last Answer : It’s up to you to implement the method inside your own class, so implementation is left entirely up to you. This might cause a problem on a higher-level scale if similarly named methods from different interfaces expect different data, but as far as compiler cares you’re okay.  To Do: Investigate 

Description : Can you inherit multiple interfaces?

Last Answer : Yes. .NET does support multiple interfaces.

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Last Answer : No. Once the proper catch block processed, control is transferred to the finally block (if there are any).

Description : Can you store multiple data types in System.Array?

Last Answer : No.

Description : Does C# support multiple-inheritance?

Last Answer : No.

Description : Can you inherit multiple interfaces? 

Last Answer : Yes, why not. 

Description : Does C# support multiple inheritance? 

Last Answer : No, use interfaces instead.

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Last Answer : No. Once an exception has occurred it executes specific exception catch block and the control comes out.

Description : Are constructors inherited? Can a subclass call the parent's class constructor? When?

Last Answer : Ans. You cannot inherit a constructor. That is, you cannot create a instance of a subclass using a constructor of one of it's superclasses. One of the main reasons is because ... developer the ability to override a superclasses constructor you would erode the encapsulation abilities of the language.

Description : Describe an abstract class and explain when one might be useful.

Last Answer : An abstract class is a class that cannot be instantiated but must be inherited. It can contain both implemented methods and abstract methods, which must be implemented in an inheriting class. ... common interface for other methods, and leave more detailed implementation up to the inheriting class.

Description : Briefly describe how a class is similar to a structure. How are they different?

Last Answer : Both classes and structures can have members such as methods, properties, and fields, both use a constructor for initialization, and both inherit from System.Object. Both classes and structures can be ... are value types, and the memory that holds structure instances is allocated on the stack. 

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Last Answer : Because a Shared (static) member belongs to the type rather than to any instance of the type, you can access the member without first creating an instance of the type.

Description : How do you enable your application to use .NET base class library members without referencing their fully qualified names?

Last Answer : Use the Imports keyword (Visual Basic .NET) or the using keyword (Visual C#) to make a .NET Framework namespace visible to your application. 

Description : what is Class ?

Last Answer : Answer:A group of objects that share a common definition and that therefore share common properties, operations, and behavior. A user-defined type that is defined with the class-key 'class,' 'struct, ... one class to be an expansion of another, and classes can restrict access to their members. 

Description : How do you specify a custom attribute for the entire assembly (rather than for a class) ?

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Last Answer : It returns a read-only, forward-only rowset from the data source. A DataReader provides fast access when a forward-only sequential read is needed.

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Description : What is an interface class?

Last Answer : Interfaces, like classes, define a set of properties, methods, and events. But unlike classes, interfaces do not provide implementation. They are implemented by classes, and defined as separate entities from classes. 

Description : When do you absolutely have to declare a class as abstract?

Last Answer : 1. When the class itself is inherited from an abstract class, but not all base abstract methods have been overridden. 2. When at least one of the methods in the class is abstract.