MATLAB: While Loop wont calcuate the harmonic mean

loopMATLABwhile loop

I dont see any reason why my program wont calculate the harmonic mean of the inputed numbers. The formula for the harmonic mean is ((N)/((1/x1)+(1/x2)…+(1/xn)))
Here's what i got:
total=0;
cnt=0;
x=1;
while x~=0
    x=input('Please input a positive number(0 to quit):');
    if x<0
        break; 
    end
    if x==0
        break; 
    end
    cnt=cnt+1;
    total=(1/total) + (1/x);
end
hmean=cnt/total;
if x<0
     fprintf('Error - Negative Inputs Entered, Program Terminated')
else
    fprintf('\nThe harmonic mean is %g',hmean)
end

Best Answer

total starts at 0, but then you have total=(1/total)+... That line should be total = total + (...) anyway.
BTW, I'm assuming you just can't use harmmean (from Statistics Toolbox)
As an aside, why not clean up the logic in the while loop by doing
if x>0
  <calculate mean>
end
It will break out of the loop when x==0 anyway (so you don't really need the break).
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