Implementing GaussianMF - Error using plot - Conversion to double from sym is not possible

    I used double() to convert sym to double even then i'm getting error
Code -
  % program to implement gaussian membership function

% Routine for Gaussian MF
x = 1:1:100;
prompt = 'Enter width of Gaussian MF:';
w = input(prompt);
prompt = 'Enter centre point Gaussian of MF:';
c = input(prompt);
gaussian = exp(-0.5*((x-c)/w).^2);
subplot(2,1,1), plot(x,gaussian)
xlabel('Variable'), ylabel('Degree of belongingness'), title('Gaussian MF')

% Routine for Headge Operator
% solved in reference to Pg.55, 56 Neuro - Fuzzy Soft Computing Jang-Sun-Miztuani
prompt = 'Enter choice for hedge operator 1-more, 2-less, 3-very, 4-extremely :';
operator = input(prompt);

switch operator
    case 1
        k = 2;
    case 2
        k = 0.5;
    case 3
        k = 3;
    case 4
        k = 4;
end
clear x;
syms x;
hedgefunc = int((gaussian.^k)/x, 'x');
y = 1:1:100;
hedgedfunc = subs(hedgefunc,y)
hedgedGaussian = double(hedgedfunc)
subplot(2,1,2), plot(x,hedgedGaussian)
xlabel('Variable'), ylabel('Degree of belongingness'), title('Hedged Gaussian MF')

I keep on getting this error

Error using plot
Conversion to double from sym is not possible.

Error in q1gaussianmf (line 34)
subplot(2,1,2), plot(x,hedgedGaussian)

Also I'm defining y=1:1:100 then why I'm getting 10000 values