OpenGL Sphere not showing - opengl

Question

The screenshot below shows the desired result.
below is the actual result
I used the glutWireSphere API for drawing my sphere, however, it is not showing.
#include <GL/glut.h>
const int RED_COLOR[3] = {255, 0, 0};
const int GREEN_COLOR[3] = { 0, 0, 255};
// color to draw in
void setDrawColor(const int rgb[3]) {
float d = 255.0; // d = max value in an rgb color spectrum
glColor3f(rgb[0]/d, rgb[1]/d, rgb[2]/d); // set draw color R=x/255 G=y/255 B=z/255 where x,y,z are values in rgb channel respectively
}
void drawPlane() {
GLfloat A[3] = { -1, 0, 1 };
GLfloat B[3] = { 1, 0, 1 };
GLfloat C[3] = { 1, 0, -1 };
GLfloat D[3] = { -1, 0, -1 };
glBegin(GL_POLYGON);
glVertex3fv(A);
glVertex3fv(B);
glVertex3fv(C);
glVertex3fv(D);
glEnd();
}
GLfloat CamX = 0, CamY = 2, CamZ = 2;
// Display Call Back
void draw() {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear all drawings in buffer
glLoadIdentity();
gluLookAt(CamX, CamY, CamZ, 0, 0, 0, 0, 1, 0);
drawPlane();
setDrawColor(GREEN_COLOR); // sets the drawing color to GREEN
glutWireSphere(0.2, 20, 20);
glutSwapBuffers();// Render Now i.e convert Buffer to Picture
return;
}
// Initialization
void initialize()
{
glClearColor(0.1f, 0.1f, 0.1f, 0.1f); // Set Background Color
setDrawColor(RED_COLOR); // sets the drawing color to red
glEnable(GL_DEPTH_TEST); // enable viewing the 3d
glMatrixMode(GL_PROJECTION); // change to perspective projection
glLoadIdentity(); // what does this do?
glFrustum(-1, 1, -1, 1, 2, 10); // what does this do?
glMatrixMode(GL_MODELVIEW); // what does this do?
}
// Main
int main(int argc, char* argv[])
{
glutInit(&argc, argv); // Initialize GLUT
int x = 512, y = 512; // x and y value
glutInitWindowPosition(
(int)(glutGet(GLUT_SCREEN_WIDTH) - x) / 2,
(int)(glutGet(GLUT_SCREEN_HEIGHT) - y) / 2); // Position the window's center
glutInitWindowSize(x, y); // Set the window's initial width & height
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH); // initialise the buffers needed. double buff, one for RGB color the other for x,y, z
glutCreateWindow("3D Bowling Game"); // Create a window with the given title
initialize(); // Custom initialisation
glutDisplayFunc(draw); // Register display callback handler for window re-paint
glutMainLoop(); // Enter the event-processing loop
return 0;
}
what am i doing wrong?