MATLAB: How to ignore new values

for example, if I have:
>> p1=5;p2=3;
and I want to calculate:
>> p1=p1-p2;p2=p1+p2
p2 =
     5
because matlab has already calculated the new value for p1, but I want it to ignore new values until the end of the second line, so that p2=8

Best Answer

Dear Tristan, you can do it as follows:
p1 = 5; % initialize p1
a = p1; % store p1 value in new variable to use later
p2 = 3; % initialize p2
p1 = p1 - p2; % overwrite value of p1
p2 = a + p2; % use old value of p1 to overwrite p2
I hope it helps. Good luck!
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