Thursday 7 April 2016

bt8903 smu b.sc it winter 2015 (april/may 2016 exam) Vth sem assignment

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Bt8903
Winter 2015

1 Define type conversion. Explain implicit and explicit type conversions.
Answer: Type casting is a way to convert a variable from one data type to another data type. For example, if you want to store a long value into a simple integer then you can type cast long to int.

Implicit Type Conversion
When the type conversion is performed automatically by the compiler without programmers intervention, such type of


2 Write a note on the following in C#:
1. Mutable strings
2. Arrays of strings
3. Regular expressions

Answer: Mutable Strings that are modifiable can be created using the StringBuilder class. The System.Text namespace contains the StringBuilder class.
Example:
StringBuilder str1=new StringBuilder(“abc”);
StringBuilder


3 Explain the following in context of methods in C# with the help of examples:
1. Invoking methods
2. Nesting of methods

Answer: Invoking Methods
The process of activating a method is known as invoking or calling. A method once declared in a class can be invoked (executed) on an object of that class. The invoking is done using the dot operator as shown below:
Objectname.

4 Define members? Explain constant members and read only members.

Answer: Members
Classes in C# consist of data and methods that operate on data called as member data and member functions. Everything you define within a class is considered to be a member of that class. In this



5 Define and explain the class visibility and class members’ visibility.
Answer: The visibility of a class, a method, a variable or a property tells us how this item can be accessed. The most common types of visibility are private and public, but there are actually several other types of visibility within C#. Here is a complete list, and although some of them might not feel


6 Describe the methods used to handle exceptions. Provide examples.
Answer: With exception handling:
v  Error-handling code is not nearly so tedious to write, and it doesn't become mixed up with your "normal" code. You write the code you want to happen; later in a separate section you write the

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or
plz drop a mail with your sub code
we will revert you within 2-3 hour or immediate
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if urgent then call us on 08791490301, 08273413412


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