How do I make numbers shift left using function?

I have a function file that shifts the numbers to the left when called. But I dont know how to get it to loop so that it will keep shifting left.

function MyShiftLeft = MyShiftLeft(x)
y=[8 4 -2 5 4 0 -1]
temp=y(1); % save first value
% shift values left
for i=1:length(y)-1
    y(i) = y(i+1);
end
% set last value to first
y(end)=temp;
y

When I use this code, it just keeps outputting the same one shifted matrix

n = input('Number of shifts to the left: ')
while n>0
    MyShiftLeft
    n-1
end

Answer 1

[C B]

@Amy Joyce Valencia I think this will work for you

function Output = MyShiftLeft(y,x)
for j=1:x
    temp=y(1);
    % shift values left
    for i=1:length(y)-1
        y(i) = y(i+1);
    end
    % set last value to first
    y(end)=temp;
end
Output=y;
end

Here is the output

>> MyShiftLeft([8 4 -2 5 4 0 -1],1)

ans =

4 -2 5 4 0 -1 8

>> MyShiftLeft([8 4 -2 5 4 0 -1],2)

ans =

-2 5 4 0 -1 8 4

>> MyShiftLeft([8 4 -2 5 4 0 -1],3)

ans =

5 4 0 -1 8 4 -2

>> MyShiftLeft([8 4 -2 5 4 0 -1],4)

ans =

4 0 -1 8 4 -2 5

[Amy Joyce Valencia]

Is this the entire code? So I would just have to put the matrix in my regular code right? Not my function?

[Amy Joyce Valencia]

This is what my function file has looked like. I think it's the regular code I'm having a hard time with.

x = input('Number of shifts to the left: ');
y= [8 4 -2 5 4 0 -1];
while x>0
    MyShiftLeft
    x = x-1;
end