This is not the safest way to do this, and you will likely realize why later, but for purely educational purposes:
while true
task = input('Please Enter Task\n','s');
switch task
case 'create a file'
fprintf('You have chosen to create a file \n');
case 'quit'
fprintf('You have chosen to quit \n');
break;
otherwise
fprintf('You have entered an action not on the list\n');
fprintf('You will now be directed to the start again to select another action \n');
end
end
