#include double rot = 0;float matCol[] = {1,0,0,0}; void display(){    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);    glPushMatrix();    glRotatef(30,1,1,0);    glRotatef(rot,0,1,1);    glMaterialfv(GL_FRONT,GL_DIFFUSE,matCol);    glutWireCube(1);    glPopMatrix();    glFlush();}  void onIdle(){    rot += 0.1;    glutPostRedisplay();} void reshape(int w,int h){    float ar = (float) w / (float) h ;     glViewport(0,0,(GLsizei)w,(GLsizei)h);    glTranslatef(0,0,-10);    glMatrixMode(GL_PROJECTION);    gluPerspective(70,(GLfloat)w/(GLfloat)h,1,12);    glLoadIdentity();    glFrustum ( -1.0, 1.0, -1.0, 1.0, 10.0, 100.0 ) ;    glMatrixMode(GL_MODELVIEW);    glLoadIdentity();} void init(){    float pos[] = {1,1,1,0};    float white[] = {1,1,1,0};    float shini[] = {70};     glClearColor(.5,.5,.5,0);    glShadeModel(GL_SMOOTH);    glLightfv(GL_LIGHT0,GL_AMBIENT,white);    glLightfv(GL_LIGHT0,GL_DIFFUSE,white);    glMaterialfv(GL_FRONT,GL_SHININESS,shini);    glEnable(GL_LIGHTING);    glEnable(GL_LIGHT0);    glEnable(GL_DEPTH_TEST);} int main(int argC, char* argV[]){    glutInit(&argC,argV);    glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB|GLUT_DEPTH);    glutInitWindowSize(600,500);    glutCreateWindow("Rossetta's Rotating Cube");    init();    glutDisplayFunc(display);    glutReshapeFunc(reshape);    glutIdleFunc(onIdle);    glutMainLoop();    return 0;}