mousePos()

void grapic::mousePos	(	int &	x,
		int &	y
	)

After this function (x,y) store the mouse position.

int x,y;
mousePos(x,y);                                                                          // test if the left button of the mouse is pressed
if ((isMousePressed(SDL_BUTTON_LEFT)) && (x>10) && (y>10) && (x<50) && (y<50)) { ... }  // if the user clicks if the square (10,10)(50,50)