"Error using input The first argument to INPUT must be a character vector."

I keep getting error from Matlab when used this code and it refere that the error in "i = input(t);", I attached my code, can anyoone helping me

start_time = 0;
end_time = 10;
dt = 0.005;
times = start_time:dt:end_time;

N = numel(times);

x = [0; 0; 10];
xdot = zeros(3, 1);
theta = zeros(3, 1);
deviation = 100;
thetadot = deg2rad(2 * deviation * rand(3, 1) - deviation);

for t = times
i = input(t);

omega = thetadot2omega(thetadot, theta);

a = acceleration(i, theta, xdot, m, g, k, kd);
omegadot = angular_acceleration(i, omega, I, L, b, k);

omega = omega + dt * omegadot;
thetadot = omega2thetadot(omega, theta);
theta = theta + dt * thetadot;
xdot = xdot + dt * a;
x = x + dt * xdot;
end

[Walter Roberson]

I do not get that error when I test your code. I instead get an error about thetadot2omega not being defined.

for t = times
i = input('t');

It seems odd that you would just prompt with the literal letter 't' for every iteration of a for loop that by concidence has an index variable named t . What is the user supposed to understand from that?

You do not use the variable t anywhere within your loop, so it is not obvious why you are looping over it.

Comments, comments, comments.

[muhammad farttoos]

Thank you for replay, can you please check i = input(t);

[Stephen23]

"can you please check i = input(t); "

There is no point in checking that: as its documentation clearly states, input's first argument must a character vector. The variable t is not a character vector.

[Walter Roberson]

i = input( num2str(t) );

But I would have to ask what the user is supposed to understand from being prompted with a time, especially as their input would be ignored ?

Is this all a way to insert a pause that the user has to press return to continue ? If so then just use the pause command