MATLAB: Database Input Skipping Rows

Question

So I have two functions, one that add customers and one that deletes customers to a .mat database. When the cell is empty and a customer is added, it starts at 2 (which is understandable), but when a second customer is added, it jumps to 7. I'm not quite sure why it keep doing this.

 fprintf('\nPlease provide the following:')
 customername = input('\nCustomer Name: ','s');
 customerphone = input('Phone #: ','s');
 customeraddress = input('Address: ','s');
 customerpoints = input('Loyalty Points: ');
 load('customerDatabase.mat');
 C = length(customerDatabase)+1;
 customerDatabase{C,1}=C+1;
 customerDatabase{C,2}=customername;
 customerDatabase{C,3}=customerphone;
 customerDatabase{C,4}=customeraddress;
 customerDatabase{C,5}=customerpoints;
 save('customerDatabase.mat','customerDatabase')
 input('Loyalty Customer added! ...Press ENTER to continue...');

Output:

 customerDatabase = 
    [2]    'Test 1'    '111-111-1111'    '11 111th St'    [  111]
     []          []                []               []         []
     []          []                []               []         []
     []          []                []               []         []
     []          []                []               []         []
    [7]    'Test2'     '222-222-2222'    '22 22ns Ave'    [22222]
 Press ENTER to continue...

Then if I try to remove customer 7 using

 load('customerDatabase.mat');
customerDatabase
removecustomer = input('Which Lolalty Customer would you like to remove? (enter customer#): ');
 for i = 1:length(customerDatabase)
    if removecustomer == customerDatabase{i,1}
        customerDatabase(i,:) = {[] [] [] [] []}; % delete row i from cell
        emptyCells = cellfun('isempty', customerDatabase); 
        customerDatabase(all(emptyCells,2),:) = [];      
        for i = 1:length(customerDatabase);
            customerDatabase{i} = 1 + i;
        end   
        save('customerDatabase.mat','customerDatabase')    
        input('Loyalty Customer Removed... Press ENTER to continue...')

It completely changes the array to output this when I view the content of the .mat database:

 customerDatabase = 
    [2]    [3]    [4]    [5]    [6]

Any help would be greatly appreciated.

Answer 1

Instead of trying

C = length(customerDatabase)+1;

Try :

C = size(customerDatabase,1)+1;