Formatting an array into currency

I have an array called MonthlyIncomeLA the values it has are as follows [4.7948e+0.3, 4.9688e+0.3...so on] I used the

format bank
MonthlyInLa

it only showed the values in the command window, how do i get the whole array of MonthlyInLA to change?

[dpb]

Formatting is only a property of the output display; the data values are still and always will be stored internally as double. Otherwise, you couldn't do any mathematical operations on them which would be most inconvenient for most cases.

[Stephen23]

"how do i get the whole array of MonthlyInLA to change?"

Neither integer nor floating point data types store any formatting information.

Formatting is purely an artifact of how those types are displayed.

[Krutik Gamit]

so there is no way I can change e+0.3 format to just integers?

[dpb]

Explain where/what you've trying to accomplish here...in the command window, no, there is no format defined that displays variables as integers unless the values are integral; then they will be shown as such (individually, if in an array that isn't fully integral, then the formatting for the array will be used).

>> format short         % is four decimal digits
>> p=pi
p =
    3.1416
>> format bank          % is two digits
>> p
p =
          3.14
>> p=round(p)           % round to integer, but bank says two decimals
p =
          3.00
>> format short         % short will show is integer by dropping trailing zeros
>> p
p =
     3
>> a=[pi 3]             % but not if in an array with a non-integral value
a =
    3.1416    3.0000
>> 

You can, of course, DISPLAY values as wanted, but that doesn't change their internal representation.

>> fprintf('%3.0f %3d \n',a)
  3   3 
>> 

NB: MATLAB has a peculiarity in that applying a '%d' formatting string to a non-integral value will result in using a '%e' formatting string. This is a safety net in MATLAB; in the C Standard it is undefined behavior (you lied to the compiler by not having a consistent variable type for the format).

So, the question is what behavior are you trying to achieve here?