小明是個走在時代尖端的人然後有一天他就被刺死了

#include <GL/glut.h>
float angleX=0;
void keyboard(unsigned char key, int x, int y)
{
     if(key=='a') angleX+=3;
     if(key=='b') angleX-=3;
     glutPostRedisplay();
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glRotatef(angleX, 0,1,0);
glutSolidTeapot(0.3);
glPopMatrix();
glutSwapBuffers();
}
int main()
{
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week10");
glutDisplayFunc(display);
glutKeyboardFunc(keyboard);
glutMainLoop();
}

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