can't draw my rectangle where I want on the screen

I need to draw case/ spare which are Rectangle.

but the problem is that glTranslated()doesn't work. When I call it my rectangle isn't draw anymore.

my rectangle: glRectf(-0.032f, 0.032f, 0.032f, -0.032f);

(I don't understand values but working)

full code:

{
  glClear(GL_COLOR_BUFFER_BIT);
  glMatrixMode(GL_MODELVIEW);
  glLoadIdentity();

  glColor3ub(254,128,1);

  //glTranslated(50, 20, 0); when I remove the comment, my rectangle doesn't appear.                                                                                                                                             
  glRectf(-0.032f, 0.032f, 0.032f, -0.032f);

  glFlush();
  SDL_GL_SwapBuffers();
}

Solution

glRectf(x1,y1,x2,y2) means draw a rectangle from point (-0.032,0.032) to the diagonally opposite corner at (0.032,-0.032).

glTranslated(50,20,0) is applying a vector to move it. Those are pretty big numbers since you are saying you can see the rectangle (square) of size 0.064 wide. It may be drawing out of your viewport so you can't see it. Try some small numbers and also glTranslated requires doubles (so I would cast them too).