The document discusses exceptions and exception handling in programs. It defines an exception as a problem that arises during program execution, such as attempting to divide by zero. Exception handling allows programs to respond to errors in a more organized way using try and catch blocks. It describes four approaches programs can take to respond to errors: crashing, informing the user and exiting, informing the user to attempt recovery, or taking corrective action without disturbing the user. The key aspects of exception handling are try blocks to detect where exceptions may occur, catch blocks to determine the type of exception and how to handle it, and throw to raise an exception from anywhere in the code.

2. MAHEEN
ROLL# 1495

3. TOPIC:-
EXCEPTION & EXCEPTION
HANDLING

4. An Exception is a problem that arises during the execution
of a program.
C++ exception is a response to an exceptional
circumstances that arises while a program is running.
E.G. An attempt to divide by zero.
This disrupts the normal flow of the program’s instructions
when an error occurs within a method the method creates
an object and hands it off to the runtime system.
What is exception?

5. Programmers use design reviews and exhaustive testing to find logic errors.
Exceptions are different, however.You can’t eliminate exceptional
circumstances; you only can prepare for them.
Programs can respond to the errors, using one of following approaches.
1. Crash the program.
2. Inform the user and exit gracefully.
3. Inform the user and allow the user to try to recover and continue.
4. Take corrective action and continue without disturbing the user.
Although it is not necessary or even desirable for every program you write
to automatically and silently recover from all exceptional
circumstances, it is clear that you must do better than crashing.
Handling Unexpected errors:

6. The process of exception handling allows us to
treat problems that can occur in a program in a
more organized way.The advantage of exception
handling is a higher automation code.
Exception handling is made by try and catch
blocks and can be thrown by throw.
Exceptional Handling:-

8. Try – detects the part of the code where we are
looking for exceptions,
Catch – is used to determine the type of
exceptions and how the caught exceptions
will be handled
throw – it can be called from anywhere in the
program code in a try ...
If an error is thrown and not caught in a try ...
catch block it will cause an abrupt
termination of the program

9. 1. Writing a simple try-catch