Question

Can I get help with adding the following to this code please?

1. When buying multiple tickets, if one of the seats selected is already taken, give a message like "Sorry, one or more of the seats selected is already taken." and prompt the user to select the seats all over. (Or if possible to make it suggest a location where the seats are together that the user can select instead)

2. Print the total cost after all of the tickets are selected/bought

#include <iostream>
#include <iostream>
#include <iomanip>

int const ROWS = 9; // number of rows
int const COLS = 10; // number of columns

using namespace std;

void printSeats(int seats[ROWS][COLS])
{

cout << left;
cout << setw(8) << " ";

for (int i = 1; i <= 10; i++)
{
cout << setw(4) << i;

}

cout << endl; // line break

cout << setw(8) << " ";

for (int i = 1; i <= 38; i++)
{

cout << "-";

}
cout << endl;

for (int i = 0; i < ROWS; i++)
{

cout << setw(4) << "Row" << setw(1) << (i + 1) << setw(3) << ": ";

for (int j = 0; j < COLS; j++)
{

cout << setw(4) << seats[i][j];

}

cout << endl;

}

}

void findSeatByPrice(int seats[ROWS][COLS],int price)
{

for (int i = 0; i < ROWS; i++)
{

for (int j = 0; j < COLS; j++)
{

if (seats[i][j] == price)
{

seats[i][j] = 0;

cout << "Found! Purchased seat -> Row: " << (i + 1) << ", Col: " << (j + 1) << " Enjoy the show!" << endl;

return;

}

}

}

cout << "Sorry, no seats found/left with price $" << price << endl;

}

void findSeatByNumber(int seats[ROWS][COLS],int row, int col)
{

row--;

if (row < 0 || row >= ROWS)
{

cout << "Invalid row!" << endl;
return;

}

col--;

if (col < 0 || col >= COLS)
{

cout << "Invalid column!" << endl;
return;

}

if (seats[row][col] == 0)
{

cout << "Sorry! That seat is already taken." << endl;
cout << "\nPlease select another seat" << endl;

return;

}

cout << "Seat booked! The price for this seat is $" << seats[row][col] << ". Enjoy the show!" << endl; // confirmation message

// marking seat as reserved

seats[row][col] = 0;

}

int main()
{

// seating chart

int seats[ROWS][COLS] = { {10, 10, 10, 10, 10, 10, 10, 10, 10, 10},

{10, 10, 10, 10, 10, 10, 10, 10, 10, 10},

{10, 10, 10, 10, 10, 10, 10, 10, 10, 10},

{10, 10, 20, 20, 20, 20, 20, 20, 10, 10},

{10, 10, 20, 20, 20, 20, 20, 20, 10, 10},

{10, 10, 20, 20, 20, 20, 20, 20, 10, 10},

{20, 20, 30, 30, 40, 40, 30, 30, 20, 20},

{20, 30, 30, 40, 50, 50, 40, 30, 30, 20},

{30, 40, 50, 50, 50, 50, 50, 50, 40, 30} };

int choice = 0;

int price, row, col;

// loop

while (choice != 3)
{

cout << right << setw(45) << "Please choose a seat or a price:" << endl << endl;

printSeats(seats);

cout << endl << "Press (1) to choose a seat by its number: " << endl;
cout << "Press (2) to choose a seat by its price: " << endl;
cout << "Press (3) to quit: " << endl;

cin >> choice;

switch (choice)
{

case 1: {

// to select multiple seats

cout << "Please enter the number of seats you would like to purchase: ";
int n,i=0;
int row[20],col[20];
    cin >> n;
               cout << "Please enter the row and col numbers: ";
           while(i<n){
      
            cin >> row[i];
            cin >> col[i++];
            }
          
int ii = 0;

while (ii<n)
{

cout << "\nSeat " << ii+1 << endl;
findSeatByNumber(seats,row[ii],col[ii]);

ii++;

}

break;

}

case 2: {

// to select multiple seats

cout << "Please enter the number of seats you would like to purchase: ";
int n,i=0;
int price[20];
    cin >> n;
               cout << "Please enter the prices: ";
           while(i<n){
      
            cin >> price[i++];
            }
          
int ii = 0;
while (ii<n)
{

cout << "\nSeat " << ii+1 << endl;
findSeatByPrice(seats,price[ii]);

ii++;

}

break;

}

}

}

system("pause");

return 0;

}

Answer 1

#include <iostream>
#include <iostream>
#include <iomanip>
int const ROWS = 9; // number of rows
int const COLS = 10; // number of columns
using namespace std;
void printSeats(int seats[ROWS][COLS]){
   cout << left;
   cout << setw(8) << " ";
   for (int i = 1; i <= 10; i++){
       cout << setw(4) << i;
   }
   cout << endl; // line break
   cout << setw(8) << " ";
   for (int i = 1; i <= 38; i++){
       cout << "-";
   }
   cout << endl;
   for (int i = 0; i < ROWS; i++)   {
       cout << setw(4) << "Row" << setw(1) << (i + 1) << setw(3) << ": ";
       for (int j = 0; j < COLS; j++){
           cout << setw(4) << seats[i][j];
       }
   cout << endl;
   }
}

int printprice(int seats[ROWS][COLS], int total){
   total = total+seats[ROWS][COLS];
   return total;
}

int findSeatByPrice(int seats[ROWS][COLS],int price,int total){
   for (int i = 0; i < ROWS; i++)   {
       for (int j = 0; j < COLS; j++)   {
           if (seats[i][j] == price) {
               total = printprice(seats[row][col], total);
               seats[i][j] = 0;
               cout << "Found! Purchased seat -> Row: " << (i + 1) << ", Col: " << (j + 1) << " Enjoy the show!" << endl;
               return total;
           }
       }
   }
   cout << "Sorry, no seats found/left with price $" << price << endl;
   return total;
}

int findSeatByNumber(int seats[ROWS][COLS],int row, int col, int total ){
   row--;
   if (row < 0 || row >= ROWS){
       cout << "Invalid row!" << endl;
       return total;
   }
   col--;
   if (col < 0 || col >= COLS){
       cout << "Invalid column!" << endl;
       return total;
   }
   if (seats[row][col] == 0){
       cout << "Sorry! That seat is already taken." << endl;
       cout << "\nPlease select another seat" << endl;
       cout << "Please enter the row and col numbers: ";
cin >> row;
cin >> col;
   total = findSeatByNumber(seats[ROWS][COLS], row, col, total );
       return total;
   }
   cout << "Seat booked! The price for this seat is $" << seats[row][col] << ". Enjoy the show!" << endl; // confirmation message
   total = printprice(seats[row][col], total);
   // marking seat as reserved
   seats[row][col] = 0;
   return total;
}
int main() {
// seating chart
   int seats[ROWS][COLS] = {
       {10, 10, 10, 10, 10, 10, 10, 10, 10, 10},
       {10, 10, 10, 10, 10, 10, 10, 10, 10, 10},
       {10, 10, 10, 10, 10, 10, 10, 10, 10, 10},
       {10, 10, 20, 20, 20, 20, 20, 20, 10, 10},
       {10, 10, 20, 20, 20, 20, 20, 20, 10, 10},
       {10, 10, 20, 20, 20, 20, 20, 20, 10, 10},
       {20, 20, 30, 30, 40, 40, 30, 30, 20, 20},
       {20, 30, 30, 40, 50, 50, 40, 30, 30, 20},
       {30, 40, 50, 50, 50, 50, 50, 50, 40, 30} };

   int choice = 0;
   int total = 0;
   int price, row, col;
   // loop
   while (choice != 3)
   {
   cout << right << setw(45) << "Please choose a seat or a price:" << endl << endl;
   printSeats(seats);
   cout << endl << "Press (1) to choose a seat by its number: " << endl;
   cout << "Press (2) to choose a seat by its price: " << endl;
   cout << "Press (3) to quit: " << endl;
   cin >> choice;
   switch (choice)   {
       case 1: {
       // to select multiple seats
       cout << "Please enter the number of seats you would like to purchase: ";
       int tickets,i=0;
       int row[20],col[20];
       cin >> tickets;
       cout << "Please enter the row and col numbers: ";
       while(i<tickets){
       cin >> row[i];
       cin >> col[i++];
       }
       int ii = 0;
       while (ii<tickets){
       cout << "\nSeat " << ii << endl;
       total=findSeatByNumber(seats,row[ii],col[ii],total);
       ii++;
       }
       break;
       }
       case 2: {
       // to select multiple seats
           cout << "Please enter the number of seats you would like to purchase: ";
           int n,i=0;
           int price[20];
       cin >> n;
   cout << "Please enter the prices: ";
   while(i<n){
       cin >> price[i++];
       }
           int ii = 0;
           while (ii<n){
               cout << "\nSeat " << ii+1 << endl;
               total= findSeatByPrice(seats,price[ii],total);
               ii++;
               }
           break;
           }
       }
   }
   if (choice == 3)
   {
       cout << "Total price : " << total << endl;
   }
       system("pause");
   return 0;
}

Here, i provide the edited code for the above question.