how to plot a smily in matlab

main.m
% create a circle for the face
theta = linspace(0, 2*pi);
x = 3*cos(theta);
y = 3*sin(theta);

% plot the face
plot(x,y,'LineWidth',2,'Color','black');
hold on;

% create circles for the eyes
theta_2 = linspace(0, 2*pi);
x_2 = 0.75*cos(theta_2) - 1.5;
y_2 = 0.75*sin(theta_2) + 0.75;
x_3 = 0.75*cos(theta_2) + 1.5;
y_3 = 0.75*sin(theta_2) + 0.75;

% plot the eyes
plot(x_2,y_2,'LineWidth',2,'Color','black');
plot(x_3,y_3,'LineWidth',2,'Color','black');

% create arcs for the mouth
theta_3 = linspace(-pi/4, pi/4);
x_4 = 2*cos(theta_3);
y_4 = -0.75*sin(theta_3) - 1.5;
x_5 = 2*cos(theta_3);
y_5 = -0.75*sin(theta_3) - 1.5;

% plot the mouth
plot(x_4,y_4,'LineWidth',2,'Color','black');
plot(x_5,y_5,'LineWidth',2,'Color','black');
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