OpenGL Light doesn't show up in my program - c++

Question

I want to make a simple OpenGL Program with a sun shining. Here is my code so far:
void init() {
glClearColor (0.0f, 0.0f, 0.0f, 0.0f);
glClear (GL_COLOR_BUFFER_BIT);
glLoadIdentity();
glOrtho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0);
// Lighting set up
glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_TRUE);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
// Set lighting intensity and color
GLfloat qaAmbientLight[] = {0.2, 0.2, 0.2, 1.0};
GLfloat qaDiffuseLight[] = {0.8, 0.8, 0.8, 1.0};
GLfloat qaSpecularLight[] = {1.0, 1.0, 1.0, 1.0};
glLightfv(GL_LIGHT0, GL_AMBIENT, qaAmbientLight);
glLightfv(GL_LIGHT0, GL_DIFFUSE, qaDiffuseLight);
glLightfv(GL_LIGHT0, GL_SPECULAR, qaSpecularLight);
// Set the light position
GLfloat qaLightPosition[] = {0, 0.758, 0.0, 1.0};
glLightfv(GL_LIGHT0, GL_POSITION, qaLightPosition);
}
void drawSun() {
glClear(GL_COLOR_BUFFER_BIT);
// Set material properties
GLfloat Yellow[] = {1.0, 0.647, 0.0, 1.0};
GLfloat White[] = {1.0, 1.0, 1.0, 1.0};
glMaterialfv(GL_FRONT, GL_AMBIENT, Yellow);
glMaterialfv(GL_FRONT, GL_DIFFUSE, Yellow);
glMaterialfv(GL_FRONT, GL_SPECULAR, White);
glMaterialf(GL_FRONT, GL_SHININESS, 60.0);
float x, y;
float radius = 0.095f;
float x_mid = 0;
float y_mid = 0.758;
glBegin(GL_POLYGON);
x = x_mid + (float)radius * cos(359 * PI / 180.0f);
y = y_mid + (float)radius * sin(359 * PI / 180.0f);
for (int j = 0; j < 360; j++)
{
glVertex2f(x, y);
x = x_mid + (float)radius * cos(j * PI / 180.0f);
y = y_mid + (float)radius * sin(j * PI / 180.0f);
glVertex2f(x, y);
}
glEnd();
}
But the sun doesn't shine, it looks like this :
I want to know if I make some mistakes in my code, any helps will be appreciated.

Answer 1

Shouldn't you call glColorMaterial to enable GL_SPECULAR that is off by default?
Also you are completely skipping all the error checking.