C#.Net Interview Question and Answers

46. What is methods?
  A method is a member that implements a computation or action that can be performed by an object or class. Static methods are accessed through the class. Instance methods are accessed through instances of the class.
 
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47. What is fields?
  A field is a variable that is associated with a class or with an instance of a class.
 
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48. What is events?
  An event is a member that enables a class or object to provide notifications. An event is declared like a field except that the declaration includes an event keyword and the type must be a delegate type.
 
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49. What is literals and their types?
 
    Literals are value constants assigned to variables in a program. C# supports several types of literals are
  • Integer literals
  • Real literals
  • Boolean literals
  • Single character literals
  • String literals
  • Backslash character literals
 
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50. What is the difference between value type and reference type?
 
  • Value types are stored on the stack and when a value of a variable is assigned to another variable.
  • Reference types are stored on the heap, and when an assignment between two reference variables occurs.
 
Goutami, said Jan 25,2014
Value Types : When a value of a variable is assigned to another variable then two copies of the variables are stored in the memory.
ReferenceTypes : When value of one variable assigned to another varible only reference is copied actual value remains on the same memory location.
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