How do I add double variables to a array of doubles?

I hope you are not doing this in a real life project, but just as an assignment in the process of understanding arrays.

 

I believe you will need to code something as follows, as it ensures that previous deposits are not overwritten when the method is called several times. Note, however, that the any calls after 50 will just be ignored. No error raised / reported because it is a void method. 

Hope it helps!

What is the issue then?

 

You can do like

transaction[0]= dep; 

 

You need to take care of the index, but I suggest you to use List class to add value dynamically, like

 

var transaction = new List();

 

//Adding alurle to it

transaction.Add(dep);