Compilare: user.cpp: In function ‘void ciur()’: user.cpp:14:18: warning: NULL used in arithmetic [-Wpointer-arith] if(v[i]==NULL) ^ user.cpp:19:18: warning: NULL used in arithmetic [-Wpointer-arith] if(v[i]==NULL) ^ user.cpp: In function ‘void citire()’: user.cpp:6:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp: In function ‘int main()’: user.cpp:34:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ciur.in", "r", stdin); ^ user.cpp:35:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ciur.out", "w", stdout); ^