# MATLAB: Is N not being displayed

displayfor loop

My problem: I am trying to find the smallest value of N for which error is less than 10^-4. I am just wondering why N is not being displayed at the end of the code.
N=10;error=1;while error<10^-4	N=N+1;	sum=0;	for n=1:N		y=1/n^2;		sum=sum+y;	end	error=((pi^2)/6)-sum;	disp(N)end

while error>10^-4