How to save output from equation in for loop into an array

I currently am calculating the values for an equation over a range of values. The output is only saving the last calculated in the value of the foor loop. How do I create an array so all the values are stored? Thank you for the help

% Range from 0.0 m to 4.00 m using 0.01 m increment
for i = 0.0:0.01:4.00
    % Formula for enthalpy from entrance to exit
    x_out = x_in + ((1/m)*(pi*Q_flux*D*i));
end 

Answer 1

[Sulaymon Eshkabilov]

% Range from 0.0 m to 4.00 m using 0.01 m increment
t=0.0:0.01:4.00;
for ii = 1:numel(t)
    % Formula for enthalpy from entrance to exit
    x_out(ii) = x_in + ((1/m)*(pi*Q_flux*D*t(ii)));
end 

[Sulaymon Eshkabilov]

Note that this can be also solved without a loop using vectorization.

x_out = x_in + ((1/m)*(pi*Q_flux*D*(0.0:0.01:4.00)));