Compilare: user.cpp: In function ‘void Hanoi(int*, int (*)[20])’: user.cpp:57:24: warning: argument to ‘sizeof’ in ‘void* memcpy(void*, const void*, size_t)’ call is the same expression as the source; did you mean to dereference it? [-Wsizeof-pointer-memaccess] memcpy(V, v, sizeof(v)); ^ user.cpp: In function ‘int main()’: user.cpp:74:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t); ^ user.cpp:75:43: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &n[0], &n[1], &n[2]); ^ user.cpp:77:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[0][i]); ^ user.cpp:79:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[1][i]); ^ user.cpp:81:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[2][i]); ^ user.cpp: In function ‘void Hanoi(int*, int (*)[20])’: user.cpp:51:55: warning: ‘tj[1]’ may be used uninitialized in this function [-Wmaybe-uninitialized] hanoi(n[0] + n[1] + n[2], tj[0], tj[1], tj[2]); ^