How to save the iteration at every time step in this code?

K1 = 3.4;
D1 = 1;
D2 = 3.5;
R1 = 5.0;
p1 = 4.0;
C1 = 1.0;
C2 = 1.0;
dt   = 0.1;
E1 = 1.0;
Y1 = 1.0;

for i=1:1000000
    C1(i) = C1(i) + dt*(E1*K1 - R1*C1(i)*Ci - Y1*D1*C1(i)*p1);
end

Answer 1

[Cris LaPierre]

Your code is already set up to capture a value at every iteration

C1(i)=...  

There is, however, a logic flaw that I see. The equation indexes the next row of C1 before there is a value there. Perhaps try something like this?

for i=1:1000000
    C1(i+1) = C1(i) + dt*(E1*K1 - R1*C1(i)*Ci - Y1*D1*C1(i)*p1);
end

[Robert101]

Thanks a lot. Its working now. I am glad for your explanation. It is very clear and to the point.