Suppose that you have the partial C++ program shown below. Declare pointers of t

Question

Suppose that you have the partial C++ program shown below.

Declare pointers of the appropriate type for all variables.Initialize the pointers to the addresses of the respective variables.Complete the memory map by filling in the contents and address values.Add the pointers to the memory map filling in all three columns. Assume that the first pointer address is 4096.Using pointer notation compute volume and pressure.

#include <iostream>

#include <fstream>

#include <iomanip>

#include <string> 

using namespace std;

int main(void)

{

       unsigned int age = 21, number = 9;
       int height = 8, width = 12, length = 6;
       float temperature = 75.2, pressure = 31.5;
       double volume = 85.74, energy = 18.5;
       string title = “UAH”;

// 1. Declare pointers to the variables shown above

// 2. Initialize the pointers

// 3. Complete the memory map showing the simple variables

VARIABLE

CONTENTS

ADDRESS

age

21

2048

number

height

length

width

temperature

pressure

volume

energy

title

 // 4. Complete the memory map by adding in the pointer information.

POINTER

CONTENTS

ADDRESS

ptr_age

2048

4096

                //  5. Write C++ statements for the following two equations using pointer notation.

                volume = height * width * length;

                pressure = number * energy * temperature /  volume;

                //  5. Show same calculations using pointer notation here

                cout << “Volume =  “ << volume << endl;

                cout << “Pressure = “ << setprecision(3) << pressure << endl;

                system(“pause”);

return 0;

}

Explanation / Answer

Please find my answer for Declaration and Initialization: 1, 2 and 5

Please repost for Q2 and 3. this Question is long.

#include <iostream>

#include <fstream>

#include <iomanip>

#include <string>

using namespace std;

int main(void)

{

unsigned int age = 21, number = 9;
int height = 8, width = 12, length = 6;
float temperature = 75.2, pressure = 31.5;
double volume = 85.74, energy = 18.5;
string title = "UAH";

// 1. Declare pointers to the variables shown above

unsigned int* agePtr, *numberPtr;
int* heightPtr, *widthPtr, *lengthPtr;
float* temperaturePtr, *pressurePtr;
double* volumePtr, *energyPtr;
string* titlePtr;

// 2. Initialize the pointers

agePtr = &age;
numberPtr = &number;
heightPtr = &height;
widthPtr = &width;
lengthPtr = &length;
temperaturePtr= &temperature;
pressurePtr = &pressure;
volumePtr = &volume;
energyPtr = &energy;
titlePtr = &title;

// 5. Write C++ statements for the following two equations using pointer notation.

volume = height * width * length;
*volumePtr = *heightPtr * *widthPtr * *lengthPtr;

pressure = number * energy * temperature / volume;
*pressurePtr = *numberPtr * *energyPtr * *temperaturePtr/ *volumePtr;

// 5. Show same calculations using pointer notation here

cout << "Volume = " << volume << endl;

cout << "Pressure = " << setprecision(3) << pressure << endl;

system("pause");

return 0;

}

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.