MATLAB: Getting an empty figure for line plot of sine function

empty figureline plotsine function

I'm trying to plot a sine function but I'm getting an empty figure

x=-10:10;
y = (sin(sin(pi*x))) / (pi*x);
zf(1) = figure(1);
za = axes;
zp = plot(x,y);
set(zp(1),'color','m','linewidth',3,'linestyle','-');

Use element-wise division operator

y = (sin(sin(pi*x))) ./ (pi*x);
                    %^ use ./ instead of /

x = [-1/pi:0.01:1/pi];
y = x.*(sin(1./x));   %<------ element by element operation 
plot(x,y)
●

x = 0:pi/20:4*pi;
plot(x, sin(x),'LineWidth',2)
hold on
plot(x, exp(-0.1*x).*sin(x),'s')
hold off