function [t, v] = skydiver_switch2(m,g,c,t)
% Function to calculate skydiver falling speed with
% number of inputs determined on the fly.
%
% Inputs:  mass m (kg)
%          gravity g (m/s^2)
%          drag coefficient c (kg/m)
%          time vector (s)
%
% Outputs: falling speed vector v (m/s)

% Check how many parameters the user has input and assign
% default values based on that number

switch nargin
    case 0
        error('Please rerun the program and enter enter at least one input.')
    case 1
        g = 9.81;
        c = 0.25;
        t = (0:0.1:20)';
    case 2
        c = 0.25;
        t = (0:0.1:20)';
    case 3
        t = (0:0.1:20)';
end

v = sqrt(m*g/c)*tanh(sqrt(g*c/m)*t);

% Determine if terminal velocity was reached
tol = 1e-4;

npts = size(v,1);
dv = abs(v(npts,1)-v(npts-1,1));

% How can we use a switch statement to print out the correct message?
% We need to turn dv into either a string or an integer.
if dv < tol
    message = 1;
else
    message = 2;
end

switch message
    case 1
        disp('Terminal velocity was researched.')
    case 2
        disp('Terminal velocity was not reached.')
end