Question

Make a program that will calculate and compute for the quotient of miles and gallons (mpg: miles per gallons). Your program should must ask the user to specify the size of the array (using dynamic array) for the following variable: miles ,gallons and mpg. Prompt the user to Initialize  the value of miles (value for miles should be 100-250) and gallons (values should be from 5-25). Use pointer galPtr for gallons, milPtr for miles and mpgPtr for mpg.  Use function MilesPerrGallon (double,double) to compute for the values of mpg and use exception handling try-throw-catch  to validate the values of miles and gallons.  Finally set the width to 7 and the decimal places to 2.

#include
#include
using namespace std;
 
//global declaration
int i;
const int size=10;
typedef double *pointers;//typedefinition used for miles per gallon pointer variables
 
//prototype
//for grade elimination
void getInput(double *input);//prompt the user to input 10 grades
double getLow(double *low);//compute and returns the value of the lowest grade
double getSum(double *sum);//compute for the sum of 10 grades
//choices and try again
char getChoice(char *ch);//display the menu of choices and input the choice of the user
 
//miles per gallon
void MilesPerrGallon(double *ptr1,double *ptr2,int sz);//final output of the computer miles
//and gallons
void MperG();//prompts the user to specify the size of the array for miles and gallons
//verify and validate the input for miles and gallons using exception handling
 
 
int main()
{
            
            //add only declaration here 
do{
 
            chr=&choice;
            opt=getChoice(chr);
            
            switch(*chr)
            {
                        case '1':  
                                {
                                      double grade[size];
                                      double *ptr;
                                      double *plow, *psum, *pave;
                                      double gsum,glow;
                                      double ave;
                                      
                                      system("cls");
                                    //add declaration here
                                      
                                      system("cls");
                                    //add code here
 
//NOTE ALL CODES MUST USE pointer variables –input,process and //output
                                      
                                                }
                                    break;
                        case '2':  MperG();
                                    break;
                        case '3': 
                                    cout<<"goodbye for now....\n";
                                    system("pause");
                                    exit(1);
                                    break;
            }
            
            
               //Add code here
            cout<