* \fn int init_pers(Prof * prof, int x, int y, int length, int width, int speed, char * path)
* \fn int init_prof(Prof * prof, int x, int y, int length, int width, int speed, char * path)
* \brief This function initialize the Teacher : position of the Teacher's top left corner (x,y), size (length, width), speed and also the path to the Teacher's image.
* \brief This function initialize the Teacher : position of the Teacher's top left corner (x,y), size (length, width), speed and also the path to the Teacher's image.