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Ren - Computer Scripting

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Book:
Computer Scripting
Author:
Ren / Tang
Genre:
Books / Computer
Year:
2021
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Computer

Scripting

Tang Ren Copyright 2020 by Tang Ren All Rights Reserved Neither part of this book nor whole of this book may be reproduced or transmitted in any form or by any means electronic, photographic or mechanical, including photocopying, recording, or by any information storage or retrieval system, without prior written permission from the author. All rights reserved ! Tang Ren Preface This book includes various computer courses which are appled to IT industries widely. These courses are designed for the computer coding learners. we can use this book as a referece guide. I T Table of Contents

Course 01

Chapter 1 Test

Questions: . . (string[ ] args) is used to pass _____ . . _____ is used to define a constant . . .

The int type of a variable is converted to object type, which is known as _____ . . The object type of a variable is converted to int type, which is known as _____ . Answers: . entery point . const . Boxing . Boxing .

Unboxing

Chapter 2 Test

Questions: . The operator _____ is used to get remainder . _____ is equivalent to x = x * y . (test-expression) ____ (if-true-do-this) ____ (if-false-do-this); . _____ runs expression first, then a plus 1 . % . x*=y . ? : . a ++ . false

Chapter 3 Test

Questions: . false

Chapter 3 Test

Questions: .

The syntax to declare a struct type like this public _____ structName {} . The syntax to declare an Enum type like this public _____ enumName {}; . _____ keyword is used to stop the running of a loop according to the condition . . _____ keyword is used to stop the current iteration, ignoring the following code, and then continue the next loop . variable = Console . _____ accepts the input from the user, and assigns the value to the variable . Answers: . struct . enum . break . continue . continue .

ReadLine()

Chapter 4 Test

Questions: . _____ can extract a substring from a string . . _____ can replace old characters with new characters in a string . . . _____ can remove a specified length of string . . .

The syntax to create an array is : _____ arrayName = {value0, value1, value2,}; Answers: . Substring( start, length ) . Replace( ); . Insert(index, character) . Remove( index, length ) . _____ can return a value to the caller . . _____ displays the exception message . . _____ block contains the codes that must be executed . . _____ new exception(); can throw out an exception for current code . . .

A _____ is a dynamic array that is changeable as needed . Answers: . return . exception . Message . throw . list

Chapter 6 Test

Questions: . list

Chapter 6 Test

Questions: .

The syntax to define a class is : public _____ ClassName;{ // declare a Class } . The syntax to create an object is : obj = _____ ClassName( ); // create an object . The name of the constructor is the same as _____ . The syntax of derived class inherits base class is : derived class _____ base class . The method of derived class can _____ the method of the base class, if two method names are the same and two arguments are the same. class . new . class name . : . override

Chapter 7 Test

Questions: . _____ members can be accessed only within the body of the same class where they are declared . . _____ member can be accessed by derived class instances . . .

The _____ is frequently used for retrieving and storing a value from a private field . . _____ stands for Language Integrated Query, which is a kind of Microsofts technology for querying data of all types . . _____ is a type which holds the functions reference in an object . private . protected . get & set accessor . LINQ . LINQ .

Delegate

Chapter 8 Test

Questions: . _____ class works as a parent class, which will be extended by its subclass . . The ____ contains one or more empty method that will be implemented by a method of the class . . _____ can be referenced by a class .

Non-static variable is referenced only by the object, not by class . . _____ can be referenced by a class . Non-static method is referenced only by the object, not by class . . Answers: . Abstract . interface . interface .

Static variable . Static method . Polymorphism

Course 02

Chapter 1 Test

Questions: . _____ prints the result at the same line . _____ prints the result at the different line . ____ outputs content to the next new line . ____ makes a return ____ makes a tab . _____ modulus operator divides the first number by the second number and returns the remainder . . .

After using comparison operators, the result will be 1 or 0 . 1 represents _____, 0 represents _____ . The expression x += y is equivalent to _____ Answers: . cout << ; cout << << endl; . \n \r \t . true false . x = x + y

Chapter 2 Test

Questions: . switch ( variable ) { case 1 : if equals this case, do this; break; case 2 : if equals this case, do this; break; _____ : if not equals any case, run default code; break; } . _____ keyword is used to stop the running of a loop according to the condition . . _____ keyword is used to stop the current iteration, ignoring the following code, and then continue the next loop . . (condition) ____ (if-true-do-this) ____ (if-false-do-this); . if ( condition) { // if true do this; } _____ { // if false do this; } Answers: . default . break . continue . ? : . else

Chapter 3 Test

Questions: . else

Chapter 3 Test

Questions: .

The syntax to create an array is : type arrayName[ ____ ] = {value0, value1, value2,}; . _____ can return the total number of bytes of an array . . _____ gets a value from an element . _____ sets a value to an element . _____ declares a function _____ calls a function . _____ defines a function . _____ can return a value to the caller . Answers: . size . sizeof (arrayName); . int value = array[index]; int array[index] = value; . type functionName( ); functionName( ); type functionName( ) { .. }; . return value

Chapter 4 Test

Questions: . _____ can input a single word . . _____ can let user input a string sentence . . _____ can check whether a user has inputted a word or sentence before submitting data . . _____ gets a character from a string by index . . _____ function can exchange two strings values . Answers: . cin >> string variable; . getline ( cin, mystring); . mystring . empty( ); . mystring . at (index) . swap( )

Chapter 5 Test

Questions: . swap( )

Chapter 5 Test

Questions: .

The syntax to define a class is _____ . The syntax to create an object is _____ . _____ is used to initialize variables, its name is the same as class name . . derived class ___ public base class . Answers: . class ClassName { // define a class }; . class ClassName { // define a class }; .

ClassName ObjectName; // create an object . constructor . : . private

Chapter 6 Test

Questions: . A _____ is a variable that stores the memory address of the variable . int *pointer1 = &x means that _____ . dataType *PointerName = &variable declares and initializes a _____ . . int *pointer = array; means that the pointer points to _____ element of the array . char *pointer = mystring; defines a pointer which points to _____ character of the mystring . Answers: . pointer . *pointer1 is x variable . . pointer . the first . the first

Chapter 7 Test

Questions: . _____ is used to output a string . . _____ is used to input strings . . _____ can let user input a string sentence . . _____ class is used to write data to a file . . _____ class is used to read data from a file . Answers: . cout . write( ) . cin . read ( ) . getline ( cin, mystring); . ofstream . ifstream

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