Suppose we execute the following statement: pid_t pid = fork(); After executing the above statement, match a possible return value to its meaning. fork() was unable to execute successfully (a forking error has occurred) The current process is the new Child The current process is the Parent [Choose ] [Choose ] ✓ [Choose ] -1 Anything above 0 0 A new instance of the std::fork struct Nothing; An exception will be thrown Nothing; The program will crash

Suppose we execute the following statement: pid_t pid = fork(); After executing the above statement, match a possible return value to its meaning. fork() was unable to execute successfully (a forking error has occurred) The current process is the new Child The current process is the Parent [Choose ] [Choose ] ✓ [Choose ] -1 Anything above 0 0 A new instance of the std::fork struct Nothing; An exception will be thrown Nothing; The program will crash

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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The given program reads a list of single-word first names and ages (ending with-1), and outputs that list with the age incremented. The program fails and throws an exception if the second input on a line is a string rather than an integer. At FIXME in the code, add try and except blocks to catch the ValueError exception and output 0 for the age. Ex: If the input is: Lee 18 Lua 21 Mary Beth 19 Stu 33 -1 then the output is: Lee 19 Lua 22 Mary 0 Stu 34
Please written by computer source Implement try/except exception handler to catch all errors (from the following source code) separately: my_string = 'Hello World' print(my_string) num = int(my_string) print(my_string + 100) num = 1/0 print(total) print('Done') Submission Instructions: 1. Write all the code in one module (in one .py file), and save it as Firstname_Lastname_hw6.py (e.g., John Adam’s file name should be John_ Adam_hw6.py).
in c++ Write a function named createOneStudent that will read in from the user the student info: id, name and gpa. It will use try-catch to handle the exception if the user provides a negative id or gpa that is out of bound (< 0.0 or > 4.0) by asking the user to re-enter them. It must provide the correct reason for the error and the actual error value. Then it will allow the user to try up to 3 times. This function will return the pointer of a newly created Student object or nullptr if the info is still incorrect. Note that this function can and will use cin and cout to read in values from the user. Here is an example of a run up to 3 times: Enter ID: -1 Enter GPA: 4.0 Enter name: John Smith Exception: negative id: -1 Enter ID: 1234 Enter GPA: 5.0 Enter name: John Smith Exception: out of bound gpa: 5.00 Enter ID: 1234 Enter GPA: 4.0 Enter name: John Smith ID(1234) NAME(John Smith) GPA(4.00) Here is an example of a run of 3 times and still not able to create it: Enter ID: 1234…
4043143640684x3y7 In the code below, we compute the sum of integers in a file by reading them one line at a time. Rearrange the following lines of code so that the input file is closed even if the int function raises an exception. Follow Programming Tip "Do not use except and finally in the same try statement" in the Exception Handling section by placing the try block and finally clause inside the outer try block. How to use this tool Unused try : Check You've added 7 blocks, but 8 were expected. Not all tests passed. 1: Compare output Input Your output X 2: Compare output Input Output differs. See highlights below. Special character legend Your output numbers1.txt Expected output Total: 100 Closing file numbers2.txt Tester.py total = 0 infile open (input()) try: Total: 554 Closing file Error: Not an integer value. except ValueError : Error: Not an integer value. Total: 554 Closing file for line in infile : value = int(line) total= total + value finally : print("Error: Not an integer…
-Modify your parameter constructors to call your set methods. This will cause validation of the parameter.-Create an exception class named TractorException.-Modify your setters to throw TractorException if invalid values are passed in. You may also need to add a throws clause to your parameter constructors. This way we will not have any print methods in our Tractor object defining class-Modify your main method to try and catch exceptions. It should catch TractorExceptions and general Exceptions and display an appropriate message import java.util.*; class TestException { public static void main(String s[]) { Scanner scanner = new Scanner(System.in); boolean valid=false; // validation loop while (!valid) { try { System.out.println("Enter integer:"); int number = scanner.nextInt(); // may throw an exception System.out.println("You entered "+ number); valid=true;…
What is a throw point? 2. What is an exception handler? 3. Explain the difference between a try block and a catch block. 4. What happens if an exception is thrown, but not caught? 5. Complete the following function that searches a numeric array for a specified value. The function should return the subscript of the element containing the value if it is found in the array. If the value is not found, the function should throw an exception. int searchArray(int array[], int size, int value){ int index = 0; // Used as an index to search array int subscript = -1; // To record position of search value while (index < size && subscript == -1) { if (array[index] == value) // If the value is found ___________________________________________________ ___________________________________________________ } if (subscript == -1) ___________________________________________________ return subscript; } Bonus…
Time Converter 1. Write a program that converts dates from a numerical month-day format to alphabetic month-day format. IE 1/31 or 01/31 would have an output of January 31. 1. User enters the month and day as a single string. It is then converted. (10%) 2. Create 2 exception classes (20%) 1. MonthException thrown for invalid months 2. DayException-thrown for invalid days for the given month 3. You can assume Feb is always 28 days 2. This should run in a for loop and end when a user is done entering dates (70%)
In Python: If you call the index method to locate an item in a list and the item is not found, this happens A ValueError exception is thrown An InvalidIndex exception is thrown The method returns -1 Nothing happens, The method does not return anything and the program continues execution
1. Write a program that creates an array with 100 randomly chosen integers. Your program should prompt the user to enter an index of the array, then displays the corresponding element value. It should prompt he user to enter the index again if the specified index is out of bounds and display the message "Index is out of bounds". You must use Exceptions to handle "index is out of bounds" error. Hint: Use ArraylndexOutOfBoundsException 2. What are the advantages of using exception handling? Attach File Browse Local Files
in C++ Define a new exception class named “VarNameException” that must inheritfrom the C++ runtime_error class. This class will capture the error case for avariable name when it does not start with a letter (lower case or upper case) or contains at least one blank. For example, if the user tries to create with a variable name of "1name", "?name" or "my name", it will generate an exception and this class should capture the reasonand the error value.
Question 3 Which statement is true about exception handling? O The override specifier overrides the normal stack unwinding process. O Exception handling should be used sparingly, when other methods of error checking are available. O It moderately improves the speed performance of most programs. O Exceptions are ignored by any function labeled noexcept that throws an exception. O It is an example of RAII.
First, create the custom exception class called OutOfStockException by creating a new class that extends the Exception class The class has a single constructor that takes a single argument, a string called message. The message argument is passed to the parent class (Exception) via the super keyword. Create the Store class and import the java.util.HashMap and java.util.Map classes The Store class is defined with a private Map called products, which is used to store the product names and their corresponding quantities. Create a default constructor that initializes the products map with three items: "apple", "banana", and "orange", with respective quantities of 10, 5, and 0. Define thepurchase method , which takes two arguments: a product name and a quantity to be purchased. This method throws an OutOfStockException if either the specified product is not available in the store or if the requested quantity is greater than the quantity available in stock. The method first…