Hello! I have two cubes rotating here, and I additionally want to move my camera on a sphere to watch this from different angles. I use keyboard function, but camera doesn't move. I don't know what's wrong... My code is this:

Code :
#include <stdio.h>
#include <stdlib.h>
#include <glut.h>
#include <math.h>
 
#define pi 3.14159265
 
typedef GLfloat point3d[3];
point3d p0={-1,-1,-13}, p1={1,-1,-13}, p2={-1,1,-13}, p3={1,1,-13}; 
point3d p4={-1,-1,-15}, p5={1,-1,-15}, p6={-1,1,-15}, p7={1,1,-15};
point3d p20={1,1,-13}, p21={1.5,1,-13}, p22={1,1.5,-13}, p23={1.5,1.5,-13}; 
point3d p24={1,1,-14}, p25={1.5,1,-14}, p26={1,1.5,-14}, p27={1.5,1.5,-14};
int delay=100, angle; //delay in msec
float xe=0., ye=0., ze=0., a=0., b=0., c=0., move=20.;
 
void InitWindow()
{
	GLfloat ambientLight[] = {0.3, 0.3, 0.3, 1};//ambient grey light
	GLfloat diffuseLight[] = {0.7, 0.7, 0.7, 1};//diffuse white light
	GLfloat lightPos[] = {1, 1, -12, 1};
 
	//ENABLE SPECULAR LIGHT
	//GLfloat specularLight[] = {0.8, 0.8, 0.8, 1};
	//GLfloat specref[] = {1, 1, 1, 1};//full reflectance
	//GLfloat spotDir[]={0, 0, -14};
	//glLightfv(GL_LIGHT0,GL_SPECULAR,specularLight);
	//glLightfv(GL_LIGHT0,GL_SPOT_DIRECTION, spotDir);
	//glLightf(GL_LIGHT0,GL_SPOT_CUTOFF,15);
	//glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR,specref);
	//glMateriali(GL_FRONT,GL_SHININESS,128);
 
	glLightfv(GL_LIGHT0,GL_AMBIENT,ambientLight);
	glLightfv(GL_LIGHT0,GL_DIFFUSE,diffuseLight);
	glLightfv(GL_LIGHT0, GL_POSITION, lightPos);
 
	glEnable(GL_LIGHTING);
	glEnable(GL_LIGHT0);
	glEnable(GL_DEPTH_TEST);
	glEnable(GL_COLOR_MATERIAL);
	glColorMaterial(GL_FRONT,GL_AMBIENT_AND_DIFFUSE);
 
	glClearColor(0.,0.,40./255.,0); //blue sky
	glMatrixMode(GL_PROJECTION);
	glFrustum(-2,2,-2,2,10,15000);
//	glOrtho(-4,5,-3,5,-13,15000);
	glMatrixMode(GL_MODELVIEW);
}
 
void Stars()
{
	float c,d;
	glLoadIdentity();
	srand(1);
	glEnable(GL_POINT_SMOOTH); 
	glColor3f(1.,1.,0.);
	glPointSize(1);
	glBegin(GL_POINTS);
	for (int i=1;i<=1000;i++){
		c=200*rand()/RAND_MAX-100;
		d=200*rand()/RAND_MAX-100;
		glVertex3i(c,d,-300);
	}
	glEnd();
	glPointSize(4);
	glBegin(GL_POINTS);
	for (int i=1;i<=100;i++){
		c=200*rand()/RAND_MAX-100;
		d=200*rand()/RAND_MAX-100;
		glVertex3i(c,d,-300);
	}
	glEnd();
	glPointSize(8);
	glBegin(GL_POINTS);
	for (int i=1;i<=10;i++){
		c=200*rand()/RAND_MAX-100;
		d=200*rand()/RAND_MAX-100;
		glVertex3i(c,d,-300);
	}
	glEnd();
}
 
void Cubes()
{
	glBegin(GL_QUADS); 
		glColor3f(0.3,0.3,0.9);//blue
		glVertex3fv(p0); glVertex3fv(p1); glVertex3fv(p3); glVertex3fv(p2);  //front
		glColor3f(0.1,0.6,0.9);
		glVertex3fv(p1); glVertex3fv(p5); glVertex3fv(p7); glVertex3fv(p3);  //right
		glColor3f(0,0.3,0.9);
		glVertex3fv(p5); glVertex3fv(p4); glVertex3fv(p6); glVertex3fv(p7);  //back
		glColor3f(0.3,0,0.9);
		glVertex3fv(p4); glVertex3fv(p0); glVertex3fv(p2); glVertex3fv(p6);  //left
		glColor3f(0.3,0.3,0);
		glVertex3fv(p2); glVertex3fv(p3); glVertex3fv(p7); glVertex3fv(p6);  //top
		glColor3f(1,0.3,1);
		glVertex3fv(p1); glVertex3fv(p0); glVertex3fv(p4); glVertex3fv(p5);  //bottom
	glEnd();
	glBegin(GL_QUADS); 
		glColor3f(0.3,0.3,0.9);//blue
		glVertex3fv(p20); glVertex3fv(p21); glVertex3fv(p23); glVertex3fv(p22);  //front
		glColor3f(0.1,0.6,0.9);
		glVertex3fv(p21); glVertex3fv(p25); glVertex3fv(p27); glVertex3fv(p23);  //right
		glColor3f(0,0.3,0.9);
		glVertex3fv(p25); glVertex3fv(p24); glVertex3fv(p26); glVertex3fv(p27);  //back
		glColor3f(0.3,0,0.9);
		glVertex3fv(p24); glVertex3fv(p20); glVertex3fv(p22); glVertex3fv(p26);  //left
		glColor3f(0.3,0.3,0);
		glVertex3fv(p22); glVertex3fv(p23); glVertex3fv(p27); glVertex3fv(p26);  //top
		glColor3f(1,0.3,1);
		glVertex3fv(p21); glVertex3fv(p20); glVertex3fv(p24); glVertex3fv(p25);  //bottom
	glEnd();
}
 
void Display(void)
{
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);  
	glLoadIdentity();
	glPushMatrix();
	Stars();
	glPopMatrix();
	xe=(cos(c*pi/180.)*cos(b*pi/180.)*cos(a*pi/180.)-sin(c*pi/180.)*sin(a*pi/180.))*xe+(cos(c*pi/180.)*cos(b*pi/180.)*sin(a*pi/180.)+sin(c*pi/180.)*cos(a*pi/180.))*ye-cos(c*pi/180.)*sin(b*pi/180.)*ze;
	ye=-(sin(c*pi/180.)*cos(b*pi/180.)*cos(a*pi/180.)-cos(c*pi/180.)*sin(a*pi/180.))*xe+(-sin(c*pi/180.)*cos(b*pi/180.)*sin(a*pi/180.)+cos(c*pi/180.)*cos(a*pi/180.))*ye+sin(c*pi/180.)*sin(b*pi/180.)*ze;
	ze=sin(b*pi/180.)*cos(a*pi/180.)*xe+sin(b*pi/180.)*sin(a*pi/180.)*ye+cos(b*pi/180.)*ze;
	gluLookAt(xe,ye,ze,0,0,-14,0,1,0);// (0,1,0) the angle of the camera,(xe,ye,ze) the camera,(0,0,-14) the focus point
 
	glTranslatef(0,0,-14);
	glRotatef(angle,0,1,0);
	glTranslatef(0,0,14);
 
	Cubes();
	glutSwapBuffers();
}
 
void Camera(unsigned char key, int x, int y)
{
//	float move=20.;
	switch(key){
		case 'q': a+=move; break;
		case 'w': a-=move; break;
		case 'a': b+=move; break;
		case 's': b-=move; break;
		case 'z': c+=move; break;
		case 'x': c-=move; break;
		case '0': a=0.; b=0.; c=0.; //go to the initial state
	}
	if(key==27) exit(0);  //turn off camera
	glutPostRedisplay();
}
 
void Rotate(int n)  // the glutTimerFunc
{
	n++;
	angle+=5;
	glutPostRedisplay();
	glutTimerFunc(delay,Rotate,n);
}
 
void main(int argc, char **argv)
{
	glutInit(&argc, argv);
	glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGB|GLUT_DEPTH);   
	glutInitWindowPosition(200,100);
	glutInitWindowSize(400,400);
	glutCreateWindow("3D-cubes rotating in space and hit by light");
	InitWindow();      
 
	glutDisplayFunc(Display);
	glutTimerFunc(delay,Rotate,0);
	glutKeyboardFunc(Camera);
	glutMainLoop();
}

Thank you for helping