Compilare: user.cpp: In function ‘int BFS()’: user.cpp:39: warning: comparison between signed and unsigned integer expressions user.cpp:34: warning: unused variable ‘gasit’ user.cpp: In function ‘int main()’: user.cpp:59: warning: unused variable ‘stop’ user.cpp:55: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:56: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:57: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:65: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int BFS()’: user.cpp:52: warning: control reaches end of non-void function user.cpp: In function ‘int main()’: user.cpp:62: warning: ‘val’ may be used uninitialized in this function