Compilare: user.cpp: In function 'int test(int, int)': user.cpp:21: warning: comparison between signed and unsigned integer expressions user.cpp:22: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void bfs(int, int, int)': user.cpp:36: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int BFS()': user.cpp:59: warning: control reaches end of non-void function /tmp/cczs2G9y.o: In function `main': user.cpp:(.text+0x3aa): warning: the `gets' function is dangerous and should not be used.