Reference-type variables of C sharp
Illustrate the characteristics of the reference-type variables which are supported in a C# programming language.
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Variables which are based on the reference types store references to actual data. Keywords which are used to declare the reference types are:
1. Class – It refers to primary building block for programs, that is used to sum up variables and methods into the single unit.
2. Interface – It contains only signatures of the properties, methods, events, or indexers.
3. Delegate – It refers to the reference type which is used to summarize a named or the anonymous method.
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