Saving for loop output in an array

I wrote a code in which I predefine the variable "a" and then set up a for loop of 5 iterations where the variable "a" goes through some basic operations. However, the for loop output only saves the fifth iteration of "a." How do I save all 5 iterations in a 1x5 array?

The code is as follows:

a = 10;
k = 0.5;
n = 2;
for m = 1:5
    a = a + (a*k) + n;
end

Answer 1

[Yatin]

Hi,

You will have to insert the value of a in another array during each iteration. Below is the modified code:

a = 10;
k = 0.5;
n = 2;
valueOfA = zeros(1,5);

for m = 1:5
    a = a + (a*k) + n;
    valueOfA(m) = a;
end

[Terry]

Thank you very much. This worked perfectly.

[hamid meyal]

i also solved after reading this answer. thank you

[Xingkai Yang]

Hi, I tried this way to solve my code, but it doesn't work. Could you help me?

t = 0:20000;
Vx1 = 1000;
A = zeros(1,20)
for ii = 1:2000:length(t)
Vx1= Vx1 - (0.0004*Vx1^2)*(t(ii)/1000)
A(ii)= Vx1;
end

[Mir Toufikur Rahman]

It helps very much. Thank you.

[mohammed magdy]

thank you sir

[yamen alharbi]

clc

clear all

a(1)=10; k=0.5;n=2;

a1=zeros(1,5); %create an array to store the results

for m=1:5

a(m+1)=a(m)+a(m)*k+n;

a1(1,m)=a(m+1); %store each result in a vector

end

Answer 2

[Vivek Selvam]

Terry, this implementation has a different final value.

a(m+1) = a(m) + a(m)*k + n;

Do you want the same final value?

If you are interested check out preallocation: