Compilare: user.cpp: In function ‘int main()’: user.cpp:27:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (v[cuv[i]] == 1) ^ user.cpp:28:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] same++, v[cuv[i]] = 2; ^ user.cpp:29:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] else if (!v[cuv[i]]) ^ user.cpp:30:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] dist++, v[cuv[i]] = 1; ^ user.cpp:19:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cod2.in", "r", stdin); ^ user.cpp:20:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cod2.out", "w", stdout); ^ user.cpp:22:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%s", &N, cuv); ^