void permutation_lignes(unsigned int tab[][6], unsigned int index_ligne1, unsigned int index_ligne2, unsigned int nb_lignes, unsigned int nb_colonnes);

void permutation_colonnes(unsigned int tab[][6], unsigned int index_colonne1, unsigned int index_colonne2, unsigned int nb_lignes, unsigned int nb_colonnes);

void afficher_tableau(unsigned int tab[][6], unsigned int nb_lignes, unsigned int nb_colonnes);