Exchange (swap) the values in x and y using pointers. You cannot assign to x or y. pointers.cpp 1 #include 2 #include 3 using namespace std; 4 5 int main() 6 { int x = 5; int y = 7; int *pl = &x; int *p2 = &y; 9 10 11 12 13 14 cout « "x->" « x « ", y->" « y « endl; } 15 16

Look at the following C++ code and comment each line about how it works with pointer. int i = 33; double d = 12.88; int * iPtr = &i;      double * dPtr = &d; //   iPtr = &d;   //   dPtr = &i;   //   iPtr = i;    //     int j = 99; iPtr = &j;  //

#include <bits/stdc++.h> using namespace std;   struct Employee {     string firstName;     string lastName;     int numOfHours;     float hourlyRate;     char major[2];     float amount;     Employee* next; }; void printRecord(Employee* e) {     cout << left << setw(10) << e->lastName << setw(10) << e->firstName << setw(12)         << e->numOfHours << setw(12) << e->hourlyRate << setw(10) << e->amount         << setw(9) << e->major[0]<< setw(7) << e->major[1]<<endl; }   void appendNode(Employee*& head, Employee* newNode) {     if (head == nullptr) {         head = newNode;     } else {         Employee* current = head;         while (current->next != nullptr) {             current = current->next;         }         current->next = newNode;     } }       void displayLinkedList(Employee* head) {     Employee* current = head; if(current!=nullptr){   cout…

m05B C++ Please extend my code to do the following: Write a brand new driver program that does the following: Creates a circle object circleOne at (0,0):5. Creates a pointer c1Ptr to circleOne Creates a circle object circleTwo at (-2,-2): 10 Creates a pointer c2Ptr to circleTwo Use greaterThan to check if circleTwo is bigger than circleOne and display results Declare an array of pointers to circles- circlePointerArray Call a function with signature inputData(circlePointerArray, string filename) that reads data from a file called dataLab4.txt into the array The following h-k are done in this function Use istringstream to create an input string stream called instream. Initialize it with each string that is read from the data file using the getline method. Read the coordinates for the center and the radius from instream to create the circles Include a try catch statement to take care of the exception that would occur if there was a file open error. Display the message “File Open Error”…

#include <bits/stdc++.h> using namespace std;   struct Employee {     string firstName;     string lastName;     int numOfHours;     float hourlyRate;     char major[2];     float amount;     Employee* next; }; void printRecord(Employee* e) {     cout << left << setw(10) << e->lastName << setw(10) << e->firstName << setw(12)         << e->numOfHours << setw(12) << e->hourlyRate << setw(10) << e->amount         << setw(9) << e->major[0]<< setw(7) << e->major[1]<<endl; }   void appendNode(Employee*& head, Employee* newNode) {     if (head == nullptr) {         head = newNode;     } else {         Employee* current = head;         while (current->next != nullptr) {             current = current->next;         }         current->next = newNode;     } }       void displayLinkedList(Employee* head) {     Employee* current = head; if(current!=nullptr){   cout…

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,…

#include <iostream> #include <iomanip> #include <string> #include <vector>   using namespace std;   class Movie  { private:     string title = "";     int year = 0; public:     void set_title(string title_param);     string get_title() const;           // "const" safeguards class variable changes within function     string get_title_upper() const;     void set_year(int year_param);     int get_year() const;   };           // NOTICE: Class declaration ends with semicolon!   void Movie::set_title(string title_param)  {     title = title_param; }   string Movie::get_title() const  {     return title; }   string Movie::get_title_upper() const  {     string title_upper;     for (char c : title) {         title_upper.push_back(toupper(c));     }     return title_upper; }   void Movie::set_year(int year_param)  {     year = year_param; }   int Movie::get_year() const  {     return year; }     int main()  {     cout << "The Movie List program\n\n"…

#include <iostream>using namespace std; struct Person{     int weight ;     int height;}; int main(){     Person fred;     Person* ptr = &fred;     fred.weight=190;     fred.height=70;     return 0;} What is a correct way to subtract 5 from fred's weight using the pointer variable 'ptr'?

int main(int argc, char **argv) { float *rainfall; float rain_today; // rainfall has been dynamically allocated space for a floating point number. // Both rainfall and rain today have been initialized in hidden code. // Assign the amount in rain_today to the space rainfall points to. return 0; }

#include <iostream> #include <iomanip> #include <string> #include <vector>   using namespace std;   class Movie  { private:     string title = "";     int year = 0; public:     void set_title(string title_param);     string get_title() const;           // "const" safeguards class variable changes within function     string get_title_upper() const;     void set_year(int year_param);     int get_year() const;   };           // NOTICE: Class declaration ends with semicolon!   void Movie::set_title(string title_param)  {     title = title_param; }   string Movie::get_title() const  {     return title; }   string Movie::get_title_upper() const  {     string title_upper;     for (char c : title) {         title_upper.push_back(toupper(c));     }     return title_upper; }   void Movie::set_year(int year_param)  {     year = year_param; }   int Movie::get_year() const  {     return year; }     int main()  {     cout << "The Movie List program\n\n"…