Compilare: user.cpp: In function 'int test(int, int)': user.cpp:28: warning: comparison between signed and unsigned integer expressions user.cpp:29: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void bfs(int, int, int)': user.cpp:43: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int BFS()': user.cpp:60: warning: comparison between signed and unsigned integer expressions /tmp/ccpHCKBX.o: In function `main': user.cpp:(.text+0x3d9): warning: the `gets' function is dangerous and should not be used.