Compilare: user.cpp: In function ‘int main()’: user.cpp:34:19: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘long long int*’ [-Wformat=] scanf("%d", &n); ^ user.cpp:59:18: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] ras[ras_size]=NULL; ^ user.cpp:63:11: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] ras[n]=NULL; ^ user.cpp:33:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("biti.in", "r", stdin); ^ user.cpp:34:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^