STARTING OUT WITH C++ MPL
9th Edition
ISBN: 9780136673989
Author: GADDIS
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 10.12, Problem 10.18CP
Program Plan Intro
Pointer:
- Pointer is a special type of variable used to store the address of the memory location, which can be accessed later.
- If an asterisk “*” operator is present before the variable, then that variable is referred as pointer variable.
- It is also called as dereferencing or indirection operator.
- Pointer is just a type of variable that stores the addresses of other variables.
- Using pointers, it is easy to access the address of a variable; the data stored in that variable can be retrieved.
Syntax of pointer variable declaration:
<variable-type> *<variable-name>;
Define the pointers to structures:
Define the pointers to structure is similar to pointer variable declaration.
Example:
//structure declaration
struct student
{
//variable declaration
string name;
//dynamically allocate array
int *score;
//variable declaration
int total;
};
Pointer is the definition to the above defined structure that can be given as follows:
//defining the pointer definition
student *stu1;
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Write the definition of a pointer to a Rectangle structure.
Assume the following structure declaration exists
struct Rectangle
{
int length;
int width;
};
Create a pointer to a Rectangle structure and define it.
Assume the structure declaration below exists.
Rectangle Structure
{
length int;
width int;
};
Activity 1
This program firstly initializes an object of struct Cirele with values and then updates those
using pointers. The program uses structure notation once and pointer notation another
afterwards.
#include
#include
#define MIN 1
#define MAX 30
struct Circle {
float xCoord;
float yCoord;
float radius;
};
/* prototypes */
float getRandomNumber (int min, int max);
void printByValue(struct Circle cirobj);
void setValue(float *target, float newValue);
void printByReference(struct Circle *cirObj);
int main(void) {
/* Declare a struct circle and name it circleobject */
struct Circle circleObject;
/* Fill circleObject's members with random numbers */
circleobject.xCoord = getRandomNumber(MIN, MAX);
circleobject.yCoord = getRandomNumber (MIN, MAX);
circleobject.radius = getRandomNumber (MIN, MAX);
/* Printing values of the circle by calling function print by value */
printByValue(circleobject);
/* update values of circle one by one */
setValue (&circleobject.xCoord, getRandomNumber(MIN,…
Chapter 10 Solutions
STARTING OUT WITH C++ MPL
Ch. 10.5 - Prob. 10.1CPCh. 10.5 - Write a statement defining a variable dPtr. The...Ch. 10.5 - List three uses of the symbol in C++.Ch. 10.5 - What is the output of the following program?...Ch. 10.5 - Rewrite the following loop so it uses pointer...Ch. 10.5 - Prob. 10.6CPCh. 10.5 - Assume pint is a pointer variable. For each of the...Ch. 10.5 - For each of the following variable definitions,...Ch. 10.10 - Assuming array is an array of ints, which of the...Ch. 10.10 - Give an example of the proper way to call the...
Ch. 10.10 - Complete the following program skeleton. When...Ch. 10.10 - Look at the following array definition: const int...Ch. 10.10 - Assume ip is a pointer to an int. Write a...Ch. 10.10 - Assume ip is a pointer to an int. Write a...Ch. 10.10 - Prob. 10.15CPCh. 10.10 - Prob. 10.16CPCh. 10.10 - Prob. 10.17CPCh. 10.12 - Prob. 10.18CPCh. 10.12 - Assume the following structure declaration exists...Ch. 10.12 - Prob. 10.20CPCh. 10 - Each byte in memory is assigned a unique _____Ch. 10 - The _____ operator can be used to determine a...Ch. 10 - Prob. 3RQECh. 10 - The _____ operator can be used to work with the...Ch. 10 - Prob. 5RQECh. 10 - Creating variables while a program is running is...Ch. 10 - Prob. 7RQECh. 10 - If the new operator cannot allocate the amount of...Ch. 10 - Prob. 9RQECh. 10 - When a program is finished with a chunk of...Ch. 10 - You should only use the delete operator to...Ch. 10 - What does the indirection operator do?Ch. 10 - Look at the following code. int X = 7; int ptr =...Ch. 10 - Name two different uses for the C++ operator.Ch. 10 - Prob. 15RQECh. 10 - Prob. 16RQECh. 10 - Prob. 17RQECh. 10 - What is the purpose of the new operator?Ch. 10 - What happens when a program uses the new operator...Ch. 10 - Prob. 20RQECh. 10 - Prob. 21RQECh. 10 - Prob. 22RQECh. 10 - Prob. 23RQECh. 10 - Prob. 24RQECh. 10 - Prob. 25RQECh. 10 - Prob. 26RQECh. 10 - What happens when a unique_ptr that is managing an...Ch. 10 - What does the get ( ) method of the unique_ptr...Ch. 10 - Prob. 29RQECh. 10 - Prob. 30RQECh. 10 - Prob. 31RQECh. 10 - Prob. 32RQECh. 10 - Consider the function void change(int p) { P = 20;...Ch. 10 - Prob. 34RQECh. 10 - Write a function whose prototype is void...Ch. 10 - Write a function void switchEnds(int array, int...Ch. 10 - Given the variable initializations int a[5] = {0,...Ch. 10 - Each of the following declarations and program...Ch. 10 - Prob. 39RQECh. 10 - Test Scores #1 Write a program that dynamically...Ch. 10 - Test Scores #2 Modify the program of Programming...Ch. 10 - Indirect Sorting Through Pointers #1 Consider a...Ch. 10 - Indirect Sorting Through Pointers #2 Write a...Ch. 10 - Pie a la Mode In statistics the mode of a set of...Ch. 10 - Median Function In statistics the median of a set...Ch. 10 - Movie Statistics Write a program that can be used...Ch. 10 - Days in Current Month Write a program that can...Ch. 10 - Age Write a program that asks for the users name...Ch. 10 - Prob. 10PC
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- Topic: pointers, dynamic array and command line arguments Write a complete C++ program named “showHelp” that accepts command line arguments. It checks whether there is a command line argument of “/help” or“/?” or “-help” followed by a topic number. It will print out “yes, topic number(<number>) if there is one. Otherwise, it prints out “no, topic number(N/A) For example, if you run this program with correct arguments as follows, it willprint out yes and its associated topic number respectivelyshowHelp /? 101showHelp /debug /help 102showHelp /print /help 103 /verboseshowHelp -verbose -debug -help And if you run the program with invalid arguments, it will print no, in all casesshowHelp -helpshowHelp 101 /?showHelp 101 102 /help /verboseshowHelp /? /help -helpNote: command line arguments are simply an array of pointers to C-string. example code: #include <iostream> using namespace std; int main(int argc, char** argv){...}arrow_forwardThe Rectangle has two data members upperLeft and lowerRight points, that represents upper left and lower right coordinates, respectively. Therefore a rectangle can be represented by a nested structure having two structures of the type POINTS as defined below.typedef struct{Point upperLeft;Point lowerRight;}Rectangle; implement the following functions:a. float length (Rectangle rec); //returns the length of the rectangleb. float width (Rectangle rec); //returns the width of the rectanglec. float area (Rectangle rec); //returns the area of the rectangled. float perimeter(Rectangle rec); //returns the area of the rectanglearrow_forwardCreate an Organization class. Organization has 10 Employees (Hint: You will need an array of pointers to Employee class) Organization can calculate the total amount to be paid to all employees Organization can print the details(name & salary) of all employees note: write code in main,header and function.cpp filearrow_forward
- Language: JAVA Script write a function 'keyValueDuplicates (obj) that takes an object as an argument and returns an array containing all keys that are also values in that object. Examples: obj1 = { orange: "juice", apple: "sauce", sauce: "pan" }; console.log(keyValueDuplicates (obj1)); // ["sauce"] obj2 = { big: "foot", foot: "ball", ball: "boy", boy: "scout"};console.log(keyValueDuplicates(obj2)); // ["foot", "ball", "boy"] obj3 = { pizza: "pie", apple: "pie" pumpkin: "pie"); console.log(keyValueDuplicates (obj3)); // [] *******************************************************************/function keyValueDuplicates (obj) { | // Your code here } /*****DO NOT MODIFY ANYTHING UNDER THIS LINE*********/ try { | module.exports = keyValueDuplicates; } catch (e) { | module.exports = null;}arrow_forwardGame of Hunt in C++ language Create the 'Game of Hunt'. The computer ‘hides’ the treasure at a random location in a 10x10 matrix. The user guesses the location by entering a row and column values. The game ends when the user locates the treasure or the treasure value is less than or equal to zero. Guesses in the wrong location will provide clues such as a compass direction or number of squares horizontally or vertically to the treasure. Using the random number generator, display one of the following in the board where the player made their guess: U# Treasure is up ‘#’ on the vertical axis (where # represents an integer number). D# Treasure is down ‘#’ on the vertical axis (where # represents an integer number) || Treasure is in this row, not up or down from the guess location. -> Treasure is to the right. <- Treasure is to the left. -- Treasure is in the same column, not left or right. +$ Adds $50 to treasure and no $50 turn loss. -$ Subtracts…arrow_forwardC++arrow_forward
- Missing line of code pleasearrow_forwardC++ code not Javaarrow_forwardData Structure & Algorithum java program Do the following: 1) Add a constructor to the class "LList" that creates a list from a given array of objects.2) Add a method "addAll" to the "LList" class that adds an array of items to the end of the list. The header of the method is as follows, where "T" is the generic type of the objects in the list. 3) Write a Test/Driver program that thoroughly tests all the methods in the class "LList".arrow_forward
- In C languagearrow_forwardInstructions: Turn all instances of classes into pointers. You will also need to combine the player and vector into one vector objects and fix all issues this causes. #ifndef ITEM_H #define ITEM_H class Item { public: Item() {}; enum class Type { sword, armor, shield, numTypes }; Item(Type classification, int bonusValue); Type getClassification() const; int getBonusValue() const; private: Type classification{ Type::numTypes }; int bonusValue{ 0 }; }; std::ostream& operator<< (std::ostream& o, const Item& src); bool operator< (const Item& srcL, const Item& srcR); int& operator+=(int& srcL, const Item& srcR); #endif // !ITEM_H #ifndef MONSTER_H #define MONSTER_H #include "Object.h" class Player; class Monster : public Object { public: Monster() {}; Monster(const Player& player); void update(Player& player, std::vector& monsters) override; int attack() const override; void defend(int damage) override; void print(std::ostream& o)…arrow_forward5. pointers, structs and arrays Given the definition struct Animal { char * species; int age; }; and the following animals: 5 year old gorilla 11 year old giraffe 4 year old cobra 2 year old gnu 8 year old lion Give a description in word AND draw a picture for each of the following declarations. Be sure to include the complete data for the animals described above. a) struct Animal zoo[5]; b) struct Animal * zoo2[5]; c) struct Animal (* zoo3)[];arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill EducationStarting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSONDigital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
- C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSONDatabase Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage LearningProgrammable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education