Compilare: user.cpp: In function ‘int main()’: user.cpp:22:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] if((c1 = v[p] % 10) != (c2 = v[n[i]] % 10)) ^ user.cpp:22:44: warning: array subscript has type ‘char’ [-Wchar-subscripts] if((c1 = v[p] % 10) != (c2 = v[n[i]] % 10)) ^ user.cpp:26:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] if((l1 = v[p] / 10) != (l2 = v[n[i]] / 10)) ^ user.cpp:26:44: warning: array subscript has type ‘char’ [-Wchar-subscripts] if((l1 = v[p] / 10) != (l2 = v[n[i]] / 10)) ^ user.cpp:12:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("telefon.in", "r", stdin); ^ user.cpp:13:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("telefon.out", "w", stdout); ^ user.cpp:20:43: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(scanf("%s", n), n[strlen(n)] = '#';;) ^