Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:29: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void citire()’: user.cpp:56: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:60: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int ciclu(int, nod*&, nod*&)’: user.cpp:99: warning: comparison between signed and unsigned integer expressions user.cpp:109: warning: comparison between signed and unsigned integer expressions user.cpp:84: warning: unused variable ‘dim’ user.cpp: In function ‘int main()’: user.cpp:151: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:152: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result