How to plot a circle with radius and coordinates?

Hey guys.. I'm new in Matlab and this is my first week of using it, and our teacher already gave us homeworks. He didn't show us anything, just something about matrix.

Please, how can I plot center(5,7) and radius 3? I've tried this:

function circleplot(xc, yc, r) 
t = 0 : .1 : 2*pi; 
x = r * cos(t) + xc; 
y = r * sin(t) + yc; 
plot(x, y) 
axis square; grid

and called it like this:

xc = 5; 
yc = 7; 
r = 3; 
circleplot(xc, yc, r)

Gives me error: | Undefined function 'circleplot' for input arguments of type 'double'. |

Answer 1

[Azzi Abdelmalek]

Your code is correct, check if your function is saved in the current folder

[Manu Manu]

Where to check that? I searched in all folders for 'functions'. Or is it about the program saving? I saved the program in Documents/Matlab. But I think it's ok.

[Azzi Abdelmalek]

type

 dir circleplot.m

[Manu Manu]

Man I forgot that my teacher wanted a SCRIPT to make this. What is the code for script?

[Azzi Abdelmalek]

The same without

function circleplot(xc, yc, r)