Need help on this stock investment program. Here's my code so far and commented instructions.

1 #include 2 #include 3 #include 4 #include 5 using namespace std; 6 7 const int QUIT = 5; 8 9 int maino 10 { 11 int cash = 1000; // the amount of money you have to invest 12 int choice; 13 14 // variable initializations 15 // include numbers of stocks for four companies (ints) 16 // include starting stock prices for four companies (ints) 17 18 19 // Build a portfolio 20 cout > choice; 36 int price; char choice; cin >> choice; int price; choice = toupper(choice); switch (choice) { case 'A': price = 540; cout 0 && choice != QUIT); cout