Difference between revisions of "Advanced-C++/C2/Exception-Handling/English-timed"

|  '''Visual Cue'''

|  Welcome to the spoken tutorial on Exception Handling in C++.

|  In this tutorial we will learn,

|Exception Handling.

|  To record this tutorial, I am using

|'''Ubuntu OS '''version 11.10

|'''g++ compiler '''v. 4.6.1

|  Let us start with an introduction to '''Exception'''

|An exception is a problem that arises during the execution of a program

|It is a run-time error that a program may detect

|  Let us move on to exception handling

|The response given to the problems occured during the execution of the program is known as  exception handling.

|Exception handling allows a program to continue execution.

|It helps Identifying the problem.

| 01:02  

| Let us see the Types of Exceptions

|'''Try'''

 

|'''Catch'''

|And '''Throw'''

|We place the error prone code inside a try block

|Then it is Handled using throw.  

|After this the exception is caught, using the catch statement

|  The syntax for try, catch and throw is:

|Throw:

 

|The try block and the catch block

|Here we pass argument

|The throw statement can be written inside the try block as well

|We can have more than try, catch blocks.

|  Now let us see an example on exception handling.

|I have the code, i'll open it

|  Note that our filename is '''exception.cpp'''

|In this program we will solve the divide by zero error using exception handling.

|Let us go through the code

|  Here we have function '''division''' with '''argument '''as''' int a''' and '''int b.'''

|If true, we throw an exception division by zero condition

|The function returns division of''' a '''and''' b'''

|  This is our main function.

|  In this we have declared integer variables as '''x,''' '''y '''and a double variable as ''' z.'''

|  This is our '''try block'''

|Here we have called the function''' division.'''

|And stored the result in '''z.'''

|In this we pass an''' argument msg '''as a''' character constant.'''

|  And this is our return statement.

| Noe let us execute the program

|  Open the terminal by pressing '''Ctrl, Alt and T '''keys simultaneously on your keyboard

|  To compile type  

'''g++ space exception dot cpp space hyphen o space ex''' '''Press Enter'''.

|Type

'''dot slash ex''' '''Press Enter'''.

|'''Enter the value of x and y:'''

|'''I will give as 3 and 0'''

|The output is displayed as: '''Division by zero condition'''

|'''Let us compile again'''

|'''Press the up arrow key twice '''

|'''Press enter

|Again press the up arrow key twice'''

|'''i will give as 8 and 2'''

|'''The output is 4'''

|  This is how the try catch and throw block works.

|Let us come back to our slides

|  Let us summarize,

|In this tutorial, we have seen, '''Exception Handling''' '''Try''' '''Catch''' and '''Throw blocks'''.

|  As an assignment  

Display the age of employess.

|Throw an exception to check that the age is not less than 15.

|  Watch the video available at the link shown  

|It summarizes the Spoken Tutorial project  

|If you do not have good bandwidth, you can download and watch it

| The Spoken Tutorial Project Team conducts workshops using spoken tutorials  

|Gives certificates to those who pass an online test  

|For more details, please write to, contact@spoken-tutorial.org

|  Spoken Tutorial Project is a part of the Talk to a Teacher project

|It is supported by the National Mission on Education through ICT, MHRD, Government of India  

|More information on this Mission is available at the link shown below: [http://spoken-tutorial.org/NMEICT-Intro http://spoken-tutorial.org\NMEICT-Intro]

| This is Ashwini Patil from IIT Bombay signing off

 

Thank You for joining.