ALOKOWANIE

printf("Podaj liczbe wierszy tablicy: ");
	scanf("%d", &w);

	printf("\nPodaj liczbe kolumn tablicy: ");
	scanf("%d", &k);

	char **tab = (char**)malloc(w*(sizeof(*tab)));
	for (i = 0; i < w; i++) {
		tab[i] = (char*)malloc(k*(sizeof(tab)));
	}

===================================
DEALOKOWANIE

for (i = 0; i < w; i++) {
		free(tab[i]);
	}
	free(tab);