CSE2001: Exception Handling and Templates in C++

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Questions and Answers

What is the primary reason why runtime errors are referred to as exceptions?

They are always syntax errors

They occur during the linking phase of a program

They cannot be caught during compilation time (correct)

They are caused by user input

What is an example of a compile-time error?

Logical error in the program's logic

File not found while attempting to read the file in program

Incorrect import of library functions and methods (correct)

Attempting to divide by zero

What is the main purpose of exception handling in C++?

To debug the program

To improve program performance

To handle runtime errors effectively (correct)

To handle syntax errors

What is the term used to describe problems that occur in a program due to an illegal operation performed by the user or by the fault of a programmer?

Errors Signup and view all the answers

What is the purpose of the throw keyword in C++?

To throw exceptions Signup and view all the answers

What are the two main types of errors in programming?

Compile-time errors and runtime errors Signup and view all the answers

What type of data can be thrown as an exception in C++?

Both basic data types and user-defined objects Signup and view all the answers

What is an example of a runtime error that is an exception in C++?

Attempting to divide by zero Signup and view all the answers

What is the purpose of the catch block in C++?

To catch and handle exceptions Signup and view all the answers

In C++, what determines the type of exception to be caught?

The exception declaration in parentheses Signup and view all the answers

What is the purpose of the try block in C++?

To wrap potentially problematic code Signup and view all the answers

What is the main purpose of exception handling in C++?

To separate the error handling code from the normal code Signup and view all the answers

What is the term used to describe the code within a try/catch block?

Protected code Signup and view all the answers

What is the purpose of the throw statement in exception handling?

To throw an exception from anywhere within a code block Signup and view all the answers

How many catch statements can be listed in a try/catch block?

Multiple Signup and view all the answers

What determines the type of exception thrown by the throw statement?

The type of the result of the expression Signup and view all the answers

What is the benefit of using exception handling in C++?

It allows the program to end gracefully by giving a proper error message Signup and view all the answers

Study Notes

Exception Handling

Errors are problems that occur in a program due to illegal operations performed by the user or programmer, also known as bugs or faults.
There are two main types of errors in programming: compile-time errors and run-time errors.
Compile-time errors are caught during compilation time, examples include syntax errors, library references, incorrect import of library functions and methods, and uneven bracket pairs.
Run-time errors, also known as exceptions, are not caught during compilation time and can cause serious issues if not handled effectively.

Throwing Exceptions

An exception is a problem that arises during the execution of a program, such as attempting to divide by zero or encountering a 'file not found' error.
In C++, exceptions can be thrown using the throw keyword.
Both basic data types and user-defined objects can be thrown as exceptions.

Catching Exceptions

The catch block following the try block catches any exception.
The type of exception to be caught is specified in parentheses following the catch keyword.
Multiple catch statements can be used to catch different types of exceptions.

Try-Catch Block

A try-catch block is used to separate error handling code from normal code.
The try block contains protected code that might generate an exception.
The catch block catches the exception and handles it.

Exception Handling in C++

Exception handling in C++ involves using try, catch, and throw keywords to handle exceptions.
Exception handling helps to prevent the normal execution of the system from being halted, and instead, ends the program gracefully with a proper error message.

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Description

Learn about exception handling and templates in C++ programming, including user-defined exceptions, function and class templates, and the Standard Template Library (STL) in this CSE2001 unit.