Compilare: user.cpp: In function ‘void Unite(int, int, int)’: user.cpp:154: warning: array subscript has type ‘char’ user.cpp:154: warning: array subscript has type ‘char’ user.cpp:156: warning: array subscript has type ‘char’ user.cpp:156: warning: array subscript has type ‘char’ user.cpp:159: warning: array subscript has type ‘char’ user.cpp: In function ‘int main()’: user.cpp:206: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:208: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:211: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:216: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result