calculate the difference between two dates all in one cell

[happydz]

Hi guys
I need to calculate the difference between two dates (Days/Months/Years) all in one cell, I tried the formula as shown in the screenshot, but it faild.
I have microsoft office excel 2007
I tried every trick I found on youtube, but none of them worked
It would be very helpful if you create a completed template (excel sheet.xls) so that I will find it easier to edit the dates
thank you in advance

 

[happydz]

[TABLE="class: grid, width: 500, align: center"]
<tbody>[TR]
[TD][/TD]
[TD]A[/TD]
[TD]B[/TD]
[TD]C[/TD]
[TD]D[/TD]
[TD]E[/TD]
[TD]F[/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD]04-05-2001[/TD]
[TD]06-06-2015[/TD]
[TD][/TD]
[TD]14[/TD]
[TD]1[/TD]
[TD]2[/TD]
[/TR]
[TR]
[TD]2[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
</tbody>[/TABLE]

 

[Fluff]

Which is correct.
What if you have the full formula in C1?