function shili17

h0=figure(‘toolbar’,’none’,…

‘position’,[200 150 450 250],…

‘name’,’实例17′);

t=(1:2:15)*pi/8;

x=sin(t);

y=cos(t);

fill(x,y,’r’)

axis square off

text(0,0,’STOP’,…

‘color’,[1 1 1],…

‘fontsize’,50,…

‘horizontalalignment’,’center’)