Compilare: user.cpp: In function ‘void cit()’: user.cpp:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void elim(int, int)’: user.cpp:36: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void bfs()’: user.cpp:76: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void antibfs()’: user.cpp:108: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int main()’: user.cpp:149: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:150: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result