Intw Questions Part3 (Nvidia)

Value type VS Ref Type
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    * A variable that is of type value directly contains a value. Assigning a variable of type value to another

variable of type value COPIES that value.
    * A variable of type reference, points to a place in memory where the actual object is contained. Assigning a

variable of type reference to another variable of type reference copies that reference (it tells the new object

where the place in memory is), but does not make a copy of the object.


    * Value types are stored on the stack.
    * Reference types are stored on the heap.


    * Value types can not contain the value null. *
    * Reference types can contain the value null.

    * Value types derive from System.ValueType.
    * Reference types derive from System.Object.

    * Changing the value of one value type does not affect the value of another value type.
    * Changing the value of one reference type MAY change the value of another reference type.
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Polymorphism/Run time polymorphism, how to acheive run time polymorphism

Managed VS Unmanaged code
Types of array in C#, Jagged array
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//"jagged" array: araay of(array of int)
int[][] j2 = new int[3][];
j2[0] = new int[] {1, 2, 3};
j2[1] = new int[] {1, 2, 3, 4, 5, 6};
j2[2] = new int[] {1, 2, 3, 4, 5, 6, 7, 8, 9};
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Types of operator in C#, specifically c# operators
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Primary- I++, I--
Additive- + -
Relational- > < >= <=
Assignment- += -=
Ternary ? :
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How to control overflow in c#, operator to use that
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Use checked where it is a possible error condition which you want to catch.
 int square(int i)
    {
        return i * i;
    }
    void f()
    {
        checked
        {
            int i = square(1000000);
        }
    }
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Virtual Functions
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a virtual function or virtual method is a function or method whose behaviour can be overridden within an inheriting

class by a function with the same signature.
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Compilation of Code in .Net
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Developers using the CLR write code in a language such as C# or VB.NET. At compile time, a .NET compiler converts

such code into CIL code. At runtime, the CLR's just-in-time compiler converts the CIL code into code native to the

operating system.
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Operator Overloading
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Operator overloading permits user-defined operator implementations to be specified for operations
&&, || They can’t be overloaded
() (Conversion operator) They can’t be overloaded
=, . , ?:, ->, new, is, as, size of These operators can’t be overloaded
In C#, a special function called operator function is used for overloading purpose. These special function or

method must be public and static.
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