I am trying to write a simple application with xcode that displaces a quad.For this I am using glTranslatef.The evidenced part of the code is where I try to translate the points.

Code :
#import <OpenGL/OpenGL.h>
#import <GLUT/GLUT.h>
 
 
int width=500, height=500;
 
 
void init()
{
    glViewport(0, 0, width, height);
    glLoadIdentity();
    glOrtho(0, width, height, 0, 0, 1);
}
 
 
void display()
{
    glClearColor(0.9, 0.9, 0.9, 1.0);
    glClear(GL_COLOR_BUFFER_BIT);
    glColor3f(1.0, 0.0, 0.0);
     glMatrixMode(GL_MODELVIEW);  /************************/
    glLoadIdentity();[/B]          /**************/
    glTranslatef(100,0,0);    /****** trying to translate the vertexes  */
    glBegin(GL_QUADS);
    glVertex2i(100, 100);
    glVertex2i(300, 100);
    glVertex2i(300, 300);
    glVertex2i(100, 300);
    glEnd();
    glFlush();
}
 
 
int main(int argc, char * argv[])
{
    glutInit(&argc, argv);
    glutInitWindowPosition(100, 100);
    glutInitWindowSize(width, height);
    glutCreateWindow("Test");
    glutDisplayFunc(display);
    init();
    glutMainLoop();
    return 0;
}

The quad should be displaced of 100 units in the widnow.Since in the glOrtho I specify the size of the view, I think that the quad shall be displayed inside the window.But instead I don't see anything: there isn't a quad in the window.So maybe I'm not using properly glTranslatef, but I can't find the error.