How do I write strings and numbers to a excel file

I am trying to create a .csv or .xlsx file with data and strings. The first row being titles Example output:

Test# Subject Data1 Data2 Data3
Test1 AAA     1     2     3
Test2 BBB     4     5     6

I made a matrix that stores the data in a variable A. Using csvwrite('Temp',A)

A=[1 2 3;4 5 6]

csv file output:

1    2    3
4    5    6

But am unable to add the titles which are stored as strings

Answer 1

[Jan]

Data = {'Test#', 'Subject', 'Data1', 'Data2', 'Data3'; ...
        'Test1', 'AAA',     1,     2,     3; ...
        'Test2', 'BBB',     4,     5,     6};
xlswrite('File.xlsx', A);

You find some implementations to store a cell in a CSV file directly in the FileExchange:

FEX: Search "cell to file"