#include<iostream>

using namespace std;

//Structure of the Menu Item

struct menuItem{

char description[25];

float price;

int count;

};

//For display float values upto 2 decimal

float round(float var)

{

float value = (int)(var * 100 + .5);

return (float)value / 100;

}

//For display Menu Item List

void displayMenu(menuItem menu[]){

int i;

for(i=0; i<6; i++)

cout << "\n["<< i+1 <<"] "<< menu[i].description <<"\t $" << round(menu[i].price) ;

}

//For Getting highest Menu Item List index

void mostorder(menuItem menu[]){

int i, countIndex = 0;

for(i=1; i < 6; i++){

if(menu[i].count > menu[countIndex].count)

countIndex = i;

}

cout << "\nItem ordered most often: " << menu[countIndex].description

<<" was purchased " << menu[countIndex].count << " times\n";

}

//For Order Menu's Item

float orderItems(menuItem menu[]){

int i = 0, j, order[10], flag = 0;

float subTotal = 0;

//Takes order list

cout<<"\nInput the item numbers for the order, 0 to quit\n";

do{

cin >> order[i++];

}while(order[i-1] != 0);

//checks whether extra item added

for(j=0; j < i-1; j++){

// cout << order[j] << "\t";

if(order[j] < 1 || order[j] > 6){

cout <<"\n*Error: There is no item."<< order[j];

flag = 1 ;

}

}

if(flag == 1){

cout<< "\nProcessing other items...";

}

//For calculating subtotal

for(j = 0; j < i-1; j++){

if(order[j] >= 1 || order[j] <= 6){

subTotal += menu[ (order[j]) - 1].price ;

menu[(order[j]) - 1].count++;

}

}

return subTotal;

}

int main(){

int i, j, order[10], countIndex;

float subTotal = 0, Tax = 0, Total, TotalSales;

char decision ;

menuItem menu[6] = { { "MacBook Air", 1099.00, 0 },

{ "MacBook Pro", 1299.00, 0 },

{ "iPad Air", 499.00, 0 },

{ "IPad Pro 11-in", 799.00, 0 },

{ "Pad Pro 12.9-in", 999.00, 0 },

{ "Watch S4", 399.00, 0 }};

do{

displayMenu(menu);

subTotal = orderItems(menu);

Tax = subTotal * 0.0825;

cout << "\nSubtotal...$ " << round(subTotal);

cout << "\nTax........$ " << round(Tax);

Total = subTotal + Tax ;

cout << "\nTotal......$ " << round(Total);

cout << "\n\nPlease enter 'N' to take a new order and 'E' to exit: " ;

cin >> decision ;

TotalSales += Total;

}while(decision != 'E');

cout << "\n*** End of Day:";

cout << "\nTotal sales: $ " << round(TotalSales) ;

mostorder(menu);

return 1;

}

https://media.cheggcdn.com/media/2d1/2d150fb6-3bfd-4398-b775-b79fa53c6edc/phpV70m3N.png

https://media.cheggcdn.com/media/490/49026e75-d901-49c1-bfae-1371fec0eeb9/phpjjOBkn.png

https://media.cheggcdn.com/media/6fe/6fe106f7-f574-4475-b5e0-fbf157af81a6/phpi9oQnX.png

https://media.cheggcdn.com/media/83a/83ae0825-e174-4979-8b30-9a04fd46fc52/phpNBr8fX.png

https://media.cheggcdn.com/media/c9a/c9a843ce-c124-4b5b-9c4d-9f0bf05d6662/phpHQ0gny.png