Compilare: user.cpp:135:2: warning: no newline at end of file user.cpp: In function 'void N(int, int)': user.cpp:18: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void S(int, int)': user.cpp:37: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void E(int, int)': user.cpp:56: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void V(int, int)': user.cpp:75: warning: comparison between signed and unsigned integer expressions