while loop question about the count

I am wonder how can I make e become a change number because when I running my code e is always equal 5 even I changed my enter number? Thanks.

[Yixuan Zhang]

e is my count

e=0;
PerValue=11;
while PerValue>Pererror && e<5
    V0=x;
    Vn=V0-(polyval(Vector,V0)/polyval(A,V0));
    e=e+1;
    PerE=abs((Vn-V0)/V0)*100;
    x=Vn;
end
finalroot=Vn;
fprintf('The volume at T=0 for the given equation is %0.5f [m^3]\n',V0)
fprintf('The solution coverged in %0.0f iterations\n',e)

Answer 1

[KALYAN ACHARJYA]

I am wonder how can I make e become a change number because when I running my code e is always equal 5 even I changed my enter number? Thanks.

Because of While loop condition

PerValue>Pererror && e<5
%.....................^...

The while loop condition true, when PerValue>Pererror and e<5,

At 1st iter e=0+1

2nd iter e=2....

.....

when e=>5, the while loop becomes false, no stop the iteration at when e<5, irrespective of any changes within the loop