C++ Code Help (While Loop) - c++

Question

#include <iostream>
using namespace std;
int main()
{
int choice;
cout << " Serendipity Booksellers\n";
cout << " Main Menu\n";
cout << "\n 1. Cashier Module";
cout << "\n 2. Inventory Database Module";
cout << "\n 3. Report Module";
cout << "\n 4. Exit\n";
cout << "\n Enter Your Choice: ";
cin >> choice;
while (choice != 4)
{
}
return 0;
Item four on the Main Menu is “Exit,” which allows the user to end the
program. Add a loop to the mainmenu.cpp program that causes it to
repeatedly display the menu until the user selects item four.
That's my assignment, can anyone help me with what to put in the while statement to accomplish that?

Answer 1

What do you want to do "while the choice is not 4"?
Probably you want to display the menu and ask for another choice, right?
That should already answer your question ;)

Answer 2

For example the loop can look like
int choice = 0;
do
{
cout << " Serendipity Booksellers\n";
cout << " Main Menu\n";
cout << "\n 1. Cashier Module";
cout << "\n 2. Inventory Database Module";
cout << "\n 3. Report Module";
cout << "\n 4. Exit\n";
cout << "\n Enter Your Choice: ";
} while ( cin >> choice && choice != 4 );
Or
do
{
cout << " Serendipity Booksellers\n";
cout << " Main Menu\n";
cout << "\n 1. Cashier Module";
cout << "\n 2. Inventory Database Module";
cout << "\n 3. Report Module";
cout << "\n 4. Exit\n";
cout << "\n Enter Your Choice: ";
if ( !( cin >> choice ) ) break;
switch ( choice )
{
case 1:
case 2;
case 3:
default:
cout << "Let's repeat one more!" << endl;
break;
case 4:
cout << "Bye!" << endl;
break;
}
} while ( choice != 4 );

Answer 3

Just put all the couts and the cin in there
#include <iostream>
using namespace std;
int main()
{
int choice = 0;
while (choice != 4)
{
cout << " Serendipity Booksellers\n";
cout << " Main Menu\n";
cout << "\n 1. Cashier Module";
cout << "\n 2. Inventory Database Module";
cout << "\n 3. Report Module";
cout << "\n 4. Exit\n";
cout << "\n Enter Your Choice: ";
cin >> choice;
}
return 0;
}

Answer 4

You are taking user input for the choice and care for it to repeat the menu for each time the choice is not '4'.
#include <iostream>
using namespace std;
int main()
{
int choice;
do {
cout << " Serendipity Booksellers\n";
cout << " Main Menu\n";
cout << "\n 1. Cashier Module";
cout << "\n 2. Inventory Database Module";
cout << "\n 3. Report Module";
cout << "\n 4. Exit\n";
cout << "\n Enter Your Choice: ";
cin >> choice;
}while (choice != 4);
return 0;
P.S.: it is good practice to use 'endl' to end a line rather than "\n"-- e.g.:
#include <iostream>
using namespace std;
int main()
{
int choice;
do {
cout << "Serendipity Booksellers" << endl;
cout << "Main Menu" << endl;
cout << "1. Cashier Module" << endl;
cout << "2. Inventory Database Module" << endl;
cout << "3. Report Module" << endl;
cout << "4. Exit" << endl;
cout << "Enter Your Choice: " << endl;
cin >> choice;
} while (choice != 4);
return 0;