University of Mumbai 2004 B.Sc Information Technology TY IT C# Regular - Question Paper

Duration -3 Hours

Marks – 100

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Question: -1
1. What is nesting of method? provide an example of method nesting.
2. discuss how array of array list differs from an array of array class.
3. What is early binding? discuss it with example.
4. What is an exception? Distinguish ranging from parameter less catch and catch (Exception e)statements.
5. What is operator overloading? What is the need to overload an operator?

Question: -2
1. State fourteen significant differences ranging from Java and C#.
2. What is method overloading? provide 2 examples where method overloading is applicable.
3. Write the syntax of every of the following: -
i) Delegate Invocation.
ii) Event Declaration.
iii) Delegate Instamiation.
4. Write the general form of the following: -
i) Interface Definition.
ii) Operator Method.

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Question: -3
1. What is a class? discuss with an example. When do we use static variables and static method?
2. discuss with example exception handling mechanism. List any 5 common C# exceptions.
3. What is inheritance? define the visibility of class member declared with the subsequent modifiers: -
i) Private
ii) Protected
iii) Protected internal

Question: -4
1. provided a list of marks ranging from 0 – 100, Write a C# program to calculate and print the number of students who found marks
i) in the range 81 to 100
ii) in the range 61 to 80
iii)in the range 41 to 60 and
iv) in the range 0 to 40
2. Write a method prime that returns actual if argument is a prime number and returns false
otherwise.

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Question: -5
1. describe an interface power that contains 3 methods viz
i) to compute the square of provided number.
ii) To compute the cube of provided number.
iii) To compute power of M raise to N
describe a class Demo that implements this interface. Write main method to check your code.
2. Write a C# program that will take 10 integers number from a command line and then print all The number that are divisible by five and 7. Also print the sum of all these number.
3. discuss the subsequent array list methods.
Add ()
Remove ()
Sort ()
Count ()

Question: -6
1. What is delegate? discuss with an example. elaborate multicast delegates? Write the condition that multicast delegate must satisfy.
2. Write the C# program that will learn the value of x and evaluate the value of Y as follows
Y = one for X > 0
Y = 0 for X = 0
Y = -1 for X < 0
Using else if statements
3. "We cannot apply a scaled modifier to abstract class". Comment.
4. Write a program to convert the provided temperature in Fahrenheit to Celsius.
[Formula: C= (F – 32)/ 1.8]

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Question: -7
1. discuss what is constructor? discuss the subsequent kind of constructors:
i) Static Constructor
ii) Private Constructor
iii) Copy Constructor
2. Write a class date that include data member day , month and year and methods that could implement the subsequent task.
i) learn a date from keyboard
ii) Display a date
iii) Increment a date by 1 day
iv) Compare 2 dates to see which is greater.
Write a main method to check your code.
3. Distinguish ranging from write and write line method with example.

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Earning:   Approval pending.