Question

// Enter your name as a comment for program identification

// Program assignment TripCost.cpp

// Enter your class section, and time

/* The program TripCost.cpp uses pointers to calculate

   the cost of a trip depending on the cost of a gallon

   of gas, the number of miles, and the number of miles

   per gallon a car gets. */

/* The cost of gas, the number of miles, and number of

   miles per gallon is entered. */

/* The cost of gas for a trip is displayed. */

//header files

/* use the correct preprocessor directives for input/output */

#________ <________>

_____ _________ ___;

_____ _________();

int main()

{

            // declare variables

            /* an integer pointer variable ptrMiles to point to

               the number of miles of the trip, an integer pointer

               variable ptrMpg to point to the number of miles per

               gallons your car gets, an integer miles the number of

               miles of your trip, an integer mpg the number of miles

               per gallon your car gets, a double pointer variable

               ptrCost that points to the cost of a gallon of gas,

               a double pointer ptrTotal that points to the total

               your trip will cost, a double variable cost for the

               cost of your gas, and a double variable total for

               the cost of your trip. */

            int *______, *______, miles, mpg;

            double *______, cost, *_______, total;

            /* assign the address of each variable to the

               appropriate pointer variable */

            _______ = &____;

            _______ = &_____;

            _______ = &____;

            _______ = &____;

            instruct();

            // prompt the user for the input for each variable

            ____ << "________________________________________: ";

            cin >> *_______;

            ___ << "______________________________: ";

            cin >> *_______;

            _____ << "_____________________________: ";

            cin >> *________;

            // calculate the cost of the trip

            *____________ = *____________/ *__________* *____________;

            cout << "_____________________ $" << *____________<< endl;

            return 0;

}

/* instruct function to instruct the user

   on the use of the program */

void instruct()

{

            cout << "______________________________________ "

                        << "______________________________________\n"

                        << "_______________________________________, "

                        << "__________________________________________\n"

                        << "______________________.\n\n";

}

result:

Enter the number of miles in your trip: 890

Enter the mpg your car gets: 23

Enter the cost of gasoline: 1.79

Your trip will cost $68.02

Answer 1

​​​​​

Explanation:

Code in C++ is given below

Note : In instruct() method kindly write the instructions as per your need

Output is given at the end of the code

Code in C++:

// Enter your name as a comment for program identification

// Program assignment TripCost.cpp

// Enter your class section, and time

/* The program TripCost.cpp uses pointers to calculate

   the cost of a trip depending on the cost of a gallon

   of gas, the number of miles, and the number of miles

   per gallon a car gets. */

/* The cost of gas, the number of miles, and number of

   miles per gallon is entered. */

/* The cost of gas for a trip is displayed. */

//header files

/* use the correct preprocessor directives for input/output */

#include <iostream>

using namespace std;

void instruct();

int main()

{

            // declare variables

            /* an integer pointer variable ptrMiles to point to

               the number of miles of the trip, an integer pointer

               variable ptrMpg to point to the number of miles per

               gallons your car gets, an integer miles the number of

               miles of your trip, an integer mpg the number of miles

               per gallon your car gets, a double pointer variable

               ptrCost that points to the cost of a gallon of gas,

               a double pointer ptrTotal that points to the total

               your trip will cost, a double variable cost for the

               cost of your gas, and a double variable total for

               the cost of your trip. */

            int *ptrMiles, *ptrMpg, miles, mpg;

            double *ptrCost, cost, *ptrTotal, total;

            /* assign the address of each variable to the

               appropriate pointer variable */

            ptrMiles = &miles;

            ptrMpg = &mpg;

            ptrCost = &cost;

            ptrTotal = &total;

            instruct();

            // prompt the user for the input for each variable

            cout << "Enter the number of miles in your trip: ";

            cin >> *ptrMiles;

            cout << "Enter the mpg your car gets: ";

            cin >> *ptrMpg;

            cout << "Enter the cost of gasoline: ";

            cin >> *ptrCost;

            // calculate the cost of the trip

            *ptrTotal = *ptrMiles/ *ptrMpg * *ptrCost;

            cout << "Your trip will cost $" << *ptrTotal<< endl;

            return 0;

}

/* instruct function to instruct the user

   on the use of the program */

void instruct()

{

            cout << "Welcome! Below we calculate the total cost"

                        << " of the trip\n"

                        << "miles travelled in the trip is entered by user, "

                        << "miles per gasoline is then taken\n"

                        << "finally we ask for cost of gasoline.\n\n";

}

OUTPUT::

Welcome! Below we calculate the total cost of the trip

miles travelled in the trip is entered by user, miles per gasoline is then taken

finally we ask for cost of gasoline.

Enter the number of miles in your trip: 890

Enter the mpg your car gets: 23

Enter the cost of gasoline: 1.79

Your trip will cost $68.02

Please provide the feedback!

Thank You!!