Compilare: user.cpp: In function 'void read()': user.cpp:28: warning: format '%hd' expects type 'short int*', but argument 2 has type 'int*' user.cpp:28: warning: format '%hd' expects type 'short int*', but argument 3 has type 'int*' user.cpp: In function 'void DFS(short int, int)': user.cpp:70: warning: comparison between signed and unsigned integer expressions /tmp/ccHOVxJV.o: In function `read()': user.cpp:(.text+0x3a6): warning: the `gets' function is dangerous and should not be used.