Review these A reference is another name given to a variable in memory of the same data type A pointer is a variable that contains the address of another variable of the same type. Q1) The fun takes a reference and return a value int fun (int &x) { x=9; return x; } int main() { int x=4; int &z=x; int k=fun (z); cout<

Review these A reference is another name given to a variable in memory of the same data type A pointer is a variable that contains the address of another variable of the same type. Q1) The fun takes a reference and return a value int fun (int &x) { x=9; return x; } int main() { int x=4; int &z=x; int k=fun (z); cout<

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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Write in C++ Language. (Mini Library): Create a structure containing book information Data members:• serial number• writer name• title of book• flag (issued/not issued). Member Functions:Create a menu in which the following can be done. 1 – Display information of book 2 - Add a new book 3 - Display all the books of a specific writer 4 - Display the number of books of a specific title 5 - Display the total number of books in the library 6 - Issue a book(If we issue a book, then its number gets decreased by 1 and if we add a book, its number gets increased by 1)
Using points, describe the design issues. The majority of computer language pointers can only point to a single kind of variable.
What is a good reason for using pointers in a program? When might you prefer a pointer to a variable instead of the value of a variable?
A & B please
A c++ application that takes five user inputs and stores them in an array before passing them to a function. Finding the smallest integer in an array is accomplished through the use of pointers.
Deal or No Deal? Code in C language
Declare an integer pointer variable intPointer. Initialize it to point to an int variablenamed someInt.Assign the value 451 to someInt and output (cout) the variable someInt and output (cout)the value pointed to by intPointer.Write an assignment statement that indirectly stores 900 into the value pointed to by intPointer.Output (cout) the value pointed to by intPointer and output (cout) the variable someInt,
Design and write a C program that performs the following functionality: 1. Prompt the user to enter a vector of maximum 10 digits. Note: the vector entered can contain spaces. 2. Read and store the vector that can contain spaces. 3. Use a recursive function to transpose the vector from a row vector to a column vector. 4. For example, if the user is prompted and enters the following in the command line (italicized and in red): Enter a vector of maximum 10 digits between 0 and 9: 1 2 3 4 5 5. Write a recursive function that will produce the following output (in blue): 1 3 4 5 6. Write and compile your code 7. Copy the code from IDE into Notepad to remove formatting and then copy and paste from Notepad into the Word document.
Pointers A pointer is basically a reference to an object or a function. In fact, it is a variable that holds memory address. This address is the location of some other variable or object in memory. For example, if one variable contains the address of another variable, first one is said to point to the second one. Pointers may have many uses, such as to make functions implement “call-by-reference” methodology and to construct dynamic arrays or structures at run-time. a) Write a complete C program that demonstrates the usage of call-by-reference technique needed for swapping.  Develop a call-by-value version to see that changes done to the parameters inside the function are lost. b) Write a complete C program that implements below given user-defined function prototypes for arrays-of-integers.  void input_1d_array( int*, int );  void output_1d_array( int*, int );  int sum_1d_array( int*, int );  float average_1d_array( int*, int );  Test each function separately! c) [if time allows]…
int x1 = 66; int y1 = 39; int d; _asm { } mov EAX, X1; mov EBX, y1; push EAX; push EBX; pop ECX mov d, ECX; What is d in decimal format?
Declare a student structure that contains : Student's first and last nameStudent IDCreate the following functions: getStudentInfo(void) Declares a single student, uses printf()/scanf() to get inputReturns the single student backprintStudentInfo(student_t *st_ptr) Takes the pointer to a student (to avoid making a copy)Prints out all of the student informationDeclare an array of five studentsUsing a for loop and getStudentInfo() function, get input of all the studentsUsing a for loop and printStudentInfo() function, print all the output of all students.
What is a pointer? How do you dereference a pointer to get its stored value?