How can I assign numbers to variables names? such as a1 a2 a3 a4 a5 ... using for loop in MATLAB

can I actually do like this?

for i =1:5

a{i} = input('Please enter number');

end

However, when I would like to compile that the error occurs... it says

playerti+11 input Please enter tocation to move li 91 T); The variable 'player' appears to change size on every loop iteration (within a script). Consider preallocating for speed. Details