The document discusses various aspects of arrays in C# including: - One dimensional arrays which contain variables of the same type and can be declared using syntax like int[] arrayName = new int[size];. - Multidimensional arrays which are arrays of arrays and can be declared using syntax like double[,] arrayName = new double[rows,columns]; - Arrays of arrays which allow arrays to be nested inside other arrays. - Other array topics covered include string manipulation, array lists, queues, and functions that can operate on arrays.

1. Maha EL-basuonyOOP

2. Agenda

3. Arraya data structure that contains several variables of the same type. One Dimensional ArrayType [ ] Array_Name = new int [arraySize]; Examplesint[] myIntArray = {5, 9, 10, 2, 99}; int[] myIntArray = new int[5]; int[] myIntArray = new int[5] {5, 9, 10, 2, 99};

5. Multidimensional Arrays -A two - dimensional array such as this is declared as follows: < baseType > [ , ] < name > Examplesdouble[ , ] hillHeight = new double[3,4]; int[ , ] hillHeight = {{1, 2, 3, 4}, {2, 3, 4, 5}, {3, 4, 5, 6}};

7. Arrays of Arraysint[][] MyArray; MyArray = {{1, 2, 3}, {1}, {1, 2}}; int[][] MyArray = {new int[] {1, 2, 3}, new int[] {1}, new int[]{1,2}}; MyArray = new int[2][];MyArray[0] = new int[3];MyArray[1] = new int[4]; MyArray= new int[3][] {new int[] {1, 2, 3}, new int[] {1},new int[] {1, 2}};

9. String Manipulation

10. String Builder

11. Array List

12. Queue

14. Functionsstatic Void < functionName > ( ){ ... } static < returnType > < functionName > ( ) { ... return < returnValue > }

18. Value Parameters

19. Reference Parameters

20. Out Parameters

21. Main Function static void Main( )static void Main(string[] args)static int Main()static StringMain(string[] args)

24. Struct Function

25. Overloading Functions create multiple functions with the same name, but each working with different parameter types

26. Generic

27. Delegates A delegate is a type that enables you to store references to functions.

29. try . . . catch . . . finally try { //the code that might has exception } catch { //exception handling block } finally { //this block is executed either there is exceptions or not }

31. Classes & Objects

32. Constructors

33. This

34. Access Modifier-Public Members are accessible from any code.-Private Members are accessible only from code that is part of the class (the default if no keyword is used). -Protected Members are accessible only from code that is part of either the class or a derived class.-Internal Members are accessible only from code within the project (assembly) where they are defined. -Protected Internal These are only accessible from code - derived classes within the project (more accurately, the assembly).

35. Class Definition

39. Encapsulation

41. Inheritanceis -a

42. has -a

43. tire is a carcar has a tirehas -a

46. Interface-like a class, but has no implementation.-Can be Internal or Public

50. Polymorphism

51. Future Sessions

52. Q & AThanks