Compilare: user.cpp:104:2: warning: no newline at end of file user.cpp: In function 'int parcurg(int)': user.cpp:24: warning: comparison between signed and unsigned integer expressions user.cpp:18: warning: unused variable 'l' user.cpp: In function 'int Validare(int)': user.cpp:41: warning: unused variable 'ok' user.cpp: In function 'void Back(int, int)': user.cpp:54: warning: comparison between signed and unsigned integer expressions user.cpp:62: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int parcurg(int)': user.cpp:38: warning: control reaches end of non-void function