main program

%main program sorusu
a = input("Please choose program to proceed.\n[1] Product Entry\n[2] Product Sales\n[3] Account Statement");

switch (a)
    case 1
        run('product_entry.m');
    case 2
        run('product_sales.m');
    case 3
        run('account_statement.m');
    otherwise
        disp('Please select proper program');
end