fan rotate in visual basic

#include <GL/glut.h>

float x = 0;
int c = 0;
int m,n,p;


void single_blade(void)

{


glColor3f(1,1,1);
glBegin(GL_LINE_LOOP);
glVertex3f(0,0,0);
glVertex3f(.1,.05,0);
glVertex3f(.1,.1,0);
glVertex3f(.2,.2,0);
glVertex3f(.2,.25,0);
glVertex3f(.1,.25,0);
glVertex3f(.25,.35,0);
glVertex3f(.2,.35,0);
glVertex3f(.3,.45,0);
glVertex3f(.25,.45,0);
glVertex3f(.4,.55,0);
glVertex3f(.3,.55,0);
glVertex3f(-.3,.55,0);
glVertex3f(-.4,.55,0);
glVertex3f(-.25,.45,0);
glVertex3f(-.3,.45,0);
glVertex3f(-.2,.35,0);
glVertex3f(-.25,.35,0);
glVertex3f(-.1,.25,0);
glVertex3f(-.2,.25,0);
glVertex3f(-.2,.2,0);
glVertex3f(-.1,.1,0);
glVertex3f(-.1,.05,0);
glVertex3f(0,0,0);
glEnd();

}

void full_fan(void)
{

    single_blade();
    glRotatef(90,0,0,1);
    single_blade();

    glRotatef(180,0,0,1);
    single_blade();

    glRotatef(270,0,0,1);
    single_blade();
    //do some transformation on the single_blade to get a full_fan.


}
void house(void)
{

full_fan();

glPushMatrix();
glTranslatef(.8,.8,0);
glScalef(-.2,-.2,1);
full_fan();
glPopMatrix();


glPushMatrix();
glTranslatef(.8,-.8,0);
glScalef(-.2,-.2,1);
full_fan();
glPopMatrix();


glPushMatrix();
glTranslatef(-.8,-.8,0);
glScalef(-.2,-.2,1);
full_fan();
glPopMatrix();

glPushMatrix();
glTranslatef(-.8,.8,0);
glScalef(-.2,-.2,1);
full_fan();
glPopMatrix();

}

float angle=0;
void display(void)

{

    glClearColor(0.0, 0.0, 0.0, 1.0);
    glClear(GL_COLOR_BUFFER_BIT);
    glLoadIdentity();
    gluLookAt(0.0, 0.0, 5.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);

    glRotatef(angle++,0,0,1);
    house();
    glFlush();


//find a way to make 4 projections of the complete fan in four different corner of the screen.


}

void reshape(int w, int h) {

    glViewport(0, 0, (GLsizei)w, (GLsizei)h);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluPerspective(30, 1, 1.0, 100.0);
    glMatrixMode(GL_MODELVIEW);
}

int main(int argc, char **argv) {
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_SINGLE); // single buffering.. (double buffering for animation)
                                      // full screen is 1000,1000
                                      // this 0,0 or 1000,1000 are world co ordinates
    glutInitWindowSize(700, 700);
    glutInitWindowPosition(100, 100);
    glutCreateWindow("A basic OpenGL Window");
    // registering callback functions
    glutDisplayFunc(display);
    glutReshapeFunc(reshape);
    glutIdleFunc(display);
    glutMainLoop();
    return 0;
}