Compilare: user.cpp: In function ‘void Unite2(int)’: user.cpp:236: warning: array subscript has type ‘char’ user.cpp:236: warning: array subscript has type ‘char’ user.cpp:238: warning: array subscript has type ‘char’ user.cpp:238: warning: array subscript has type ‘char’ user.cpp: In function ‘void backLine(int, int)’: user.cpp:270: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp: In function ‘int main()’: user.cpp:322: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:324: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:327: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:332: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result