Compilare: user.cpp: In function ‘int main()’: user.cpp:83:36: warning: argument to ‘sizeof’ in ‘void* memset(void*, int, size_t)’ call is the same expression as the destination; did you mean to dereference it? [-Wsizeof-pointer-memaccess] memset(s[i][j],0,sizeof(s[i][j])); ^ user.cpp:95:16: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (ix < 65 && iy < 65 && iz < 65) ^