function circle(cx, cy, r, linetype)



N = 150

x = zeros(1,N+1)

y = zeros(1,N+1)

for n=1:N+1

x(n) = cx + r*cos(2*pi*n/N)

y(n) = cy + r*sin(2*pi*n/N)

end

hold on plot(x, y, linetype) hold off

-function circle(cx, cy, r, linetype)



N = 150

x = zeros(1,N+1)

y = zeros(1,N+1)

for n=1:N+1

　x(n) = cx + r*cos(2*pi*n/N)

　y(n) = cy + r*sin(2*pi*n/N)

end

hold on　plot(x, y, linetype)　hold off