61. How do your initialize an object with an internal Init function? (See “ Initializing an Object Using an External
Init Function.”)
62. How do you get an object to initialize itself? (See “Initializing an object Directly.”)
63. How can a single class have more than one constructor? How does the program differentiate among
constructors? (See “Multiple Constructors.”)
64. Why do such a thing? (See “Multiple Constructors.”)
65. How do you avoid duplication in constructors? (See “Avoiding Duplication Among Constructors.”)
66. Are constructors inherited? (See “Invoking the Default Base Class Constructor.”)
67. How do you pass arguments to the base class constructor? (See “Passing Arguments to the Base Class
Constructor.”)
68. What is the destructor? (See “The Destructor”
69. Why divide a program into more than one file? (See the introductory paragraphs.)
70. What is a namespace? (See “ Declaring a namespace.”)
71. What are the five access control keywords? (See “Namespaces and Class Access.”)
72. Why do we need error handling? (See “ Why do you Need a New Error Mechanism?”)
73. What new mechanism does C# introduce for error handling? (See “ Demonstrating the exception
mechanism.”)
74. How can we extent the exception class? (See “Extending the Exception class.”)
75. How can we use multiple catch blocks for handling? (See “Multiple catch blocks.”)
76. What are the key elements of an exception handler? (See “ Multiple catch blocks.”)
77. What are cascading exceptions? (See Cascading exceptions.”)
78. What is the difference between a reference type and a value type?(See “ Declaring a C# struct.” )
79. What is meant by unifying types and how is boxing involved? (See “unified Type System.”)
80. What is the CAN_BE_USED_AS relationship? How does it differ from the IS_A relationship? (See . “ The
Interface.”)
81. What is an interface? (See “ Examining an Interface.”)
82. What are predefined interfaces? (See “Predefined interfaces.”)
83. What is an abstract interface? (See “ Abstract Interface.”)
84. What is a delegate? (See the introduction to this session.)
85. What is a callback function? (See the “ Why bother?” Sidebar.)
86. What is a disadvantage of an array? (See “ Some advantage and disadvantage of the array.”)
87. Name an alternative collection that does not suffer from the disadvantage of an array ( it may carry its own
disadvantages).(See the section after” some advantages and disadvantage of the array.”)
88. Name a third of collection.(See “Other collection types.”)
89. What is an indexer? (See “Indexers”)
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