Are constructors optional?

Constructors don’t have return type. A constructor is automatically called when an object is created. It must be placed in public section of class . If we do not specify a constructor, C++ compiler generates a default constructor for object (expects no parameters and has an empty body).

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What parameters are optional?

A method that contains optional parameters does not force to pass arguments at calling time . It means we call method without passing the arguments. The optional parameter contains a default value in function definition. If we do not pass optional argument value at calling time, the default value is used.

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What parameters are optional?

A method that contains optional parameters does not force to pass arguments at calling time . It means we call method without passing the arguments. The optional parameter contains a default value in function definition. If we do not pass optional argument value at calling time, the default value is used.

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