Exception: In C++, the exception is an object used to signal the unexpected error occurred during a program execution. An exception has been thrown when an error has been occurred in a program. Exception Handler: The “throw point” is a statement which uses the keyword “throw” to throw an exception which occurred while executing the program. After the execution of “throw” statement, the program control will move to another part in the same program to handle the exception is called as “exception handler”. In order to handle an exception, construct a “try/catch” block in a program. The “try” block: The “try” block is starts with the keyword “try” and it contains the code which will have the possibility to generate an exception. The “try” block must be followed by one or more “catch” blocks which are denoted as exception handlers. The “catch” block: The “catch” block is starts with the keyword “catch” and it is followed by an “exception parameter”. The Catch block contains the code to be executed when the error occurred in Try block. The general syntax for “try/catch” as follows: try { //code which causes an exception;try block } Catch(Exception_argument) { //code which handles the exception;catch block } //Repeat catch blocks as many as needed

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Chapter 16, Problem 4RQE

Program Plan Intro

Exception:

In C++, the exception is an object used to signal the unexpected error occurred during a program execution.

An exception has been thrown when an error has been occurred in a program.

Exception Handler:

The “throw point” is a statement which uses the keyword “throw” to throw an exception which occurred while executing the program.

After the execution of “throw” statement, the program control will move to another part in the same program to handle the exception is called as “exception handler”.

In order to handle an exception, construct a “try/catch” block in a program.

The “try” block:

The “try” block is starts with the keyword “try” and it contains the code which will have the possibility to generate an exception.

The “try” block must be followed by one or more “catch” blocks which are denoted as exception handlers.

The “catch” block:

The “catch” block is starts with the keyword “catch” and it is followed by an “exception parameter”.

The Catch block contains the code to be executed when the error occurred in Try block.

The general syntax for “try/catch” as follows:

try

{

//code which causes an exception;try block

}

Catch(Exception_argument)

{

//code which handles the exception;catch block

}

//Repeat catch blocks as many as needed

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