43 Lecture

CS304

Midterm & Final Term Short Notes

EXAMPLE – ABNORMAL TERMINATION

Abnormal termination, also known as a program crash, occurs when a program unexpectedly terminates due to an error or exception. This can happen for various reasons such as memory access violations, stack overflow, or division by zero. Abnormal


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  1. What is abnormal termination? A. A program that runs indefinitely B. A program that terminates normally C. A program that terminates unexpectedly due to an error or exception D. A program that never compiles Answer: C What can cause abnormal termination? A. Memory access violations B. Stack overflow C. Division by zero D. All of the above Answer: D What is a segmentation fault? A. A type of error that occurs when a program attempts to access memory that has already been freed or is outside of its allocated range B. A type of error that occurs when a program runs out of stack space C. A type of error that occurs when a program attempts to divide by zero D. A type of error that occurs when a program fails to compile Answer: A What is an access violation? A. A type of error that occurs when a program attempts to access memory that has already been freed or is outside of its allocated range B. A type of error that occurs when a program runs out of stack space C. A type of error that occurs when a program attempts to divide by zero D. A type of error that occurs when a program fails to compile Answer: A What is a floating-point exception? A. A type of error that occurs when a program attempts to divide a number by zero B. A type of error that occurs when a program attempts to access memory that has already been freed or is outside of its allocated range C. A type of error that occurs when a program runs out of stack space D. A type of error that occurs when a program fails to compile Answer: A What is integer division by zero? A. A type of error that occurs when a program attempts to divide an integer by zero B. A type of error that occurs when a program attempts to access memory that has already been freed or is outside of its allocated range C. A type of error that occurs when a program runs out of stack space D. A type of error that occurs when a program fails to compile Answer: A How can abnormal termination be prevented? A. Implementing error handling and exception handling mechanisms B. Proper testing and debugging practices C. Both A and B D. None of the above Answer: C What is error handling? A. A mechanism to catch and handle errors or exceptions B. A way to prevent programs from crashing C. A way to write more efficient code D. A way to increase program security Answer: A What is exception handling? A. A mechanism to catch and handle errors or exceptions B. A way to prevent programs from crashing C. A way to write more efficient code D. A way to increase program security Answer: A What is debugging? A. The process of identifying and fixing errors in a program B. The process of optimizing a program for performance C. The process of writing code D. The process of designing a program Answer: A


Subjective Short Notes
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  1. What is abnormal termination in computer programming? Abnormal termination refers to the unexpected termination of a program due to an error or exception. It occurs when a program encounters an unforeseen problem and cannot continue to execute normally. What is the difference between an exception and an error? An error is a problem that occurs at runtime and halts program execution, while an exception is a problem that occurs at runtime but can be handled by the program through the use of exception handling techniques. What is the purpose of exception handling? The purpose of exception handling is to provide a mechanism for handling errors and exceptions in a program gracefully. It allows the program to detect and respond to errors without crashing or terminating unexpectedly. What is a try-catch block? A try-catch block is a programming construct used in exception handling. The try block contains the code that might throw an exception, while the catch block contains the code that handles the exception if one is thrown. What is the syntax of a try-catch block? The basic syntax of a try-catch block is as follows: try { // Code that might throw an exception } catch (ExceptionType e) { // Code to handle the exception } What is the purpose of the finally block in a try-catch-finally statement? The finally block is used to contain code that is guaranteed to execute regardless of whether or not an exception is thrown. It is typically used for cleanup operations such as closing files or releasing resources. What is the difference between a checked exception and an unchecked exception? A checked exception is a type of exception that the compiler requires the program to handle or declare, while an unchecked exception is a type of exception that the compiler does not require the program to handle or declare. How can you create your own exception class? You can create your own exception class by extending the Exception class or one of its subclasses. Your custom exception class should provide constructors that allow you to pass any necessary information to the superclass. What is the purpose of the throw keyword? The throw keyword is used to explicitly throw an exception from a method or block of code. It allows you to create and throw your own custom exceptions or to re-throw exceptions that have been caught by a catch block. What is the purpose of the throws keyword? The throws keyword is used in a method declaration to indicate that the method may throw one or more types of exceptions. It allows the calling code to handle the exceptions that might be thrown by the method.

In programming, abnormal termination refers to the unexpected or abnormal end of a program or process. This can be caused by a number of factors such as a runtime error, an unhandled exception, or an external event like a power outage. For example, if a program attempts to divide a number by zero, it will encounter a runtime error and stop executing. This is an example of abnormal termination. Abnormal termination can have serious consequences, especially in critical systems. It can result in data loss, system crashes, and security vulnerabilities. Therefore, it is important to handle exceptions and errors properly to prevent abnormal termination. In C++, the standard library provides a mechanism for handling exceptions through the use of the try-catch block. This allows the program to catch and handle exceptions in a controlled manner, preventing abnormal termination. Additionally, it is important to implement proper error handling and logging mechanisms to help diagnose and fix issues that may lead to abnormal termination. This includes using tools like debuggers and log analyzers to identify the root cause of the issue. Overall, abnormal termination is a common issue in programming that can have serious consequences. By implementing proper exception handling and error logging mechanisms, developers can prevent abnormal termination and ensure their programs run smoothly and securely.