C#L10 Flashcards
What is an exception?
An error that disrupts normal program execution.
What is the purpose of exception handling?
To catch and handle errors without crashing the program.
Name a common exception that occurs when dividing by zero.
DivideByZeroException.
Which keyword is used to catch exceptions?
catch.
What does the finally block do?
Ensures code runs regardless of an exception.
How do you manually throw an exception?
Using the throw keyword.
What exception occurs when accessing an uninitialized object?
NullReferenceException.
What is the correct syntax for a try-catch block?
try { } catch (Exception ex) { }.
What happens if an exception is not caught?
The program crashes.
What is the base class for all exceptions in C#?
System.Exception.
Which exception occurs when an index is out of range?
IndexOutOfRangeException.
What exception occurs if a string cannot be converted to a number?
FormatException.
What is exception propagation?
When an exception moves up the call stack if not handled.
Can a try block exist without a catch block?
Yes, if a finally block is present.
How can multiple exceptions be handled separately?
By using multiple catch blocks.
