Borderou de evaluare (job #105803)

Compilare: user.cpp: In function ‘int main()’: user.cpp:16:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:17:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:27:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:10:9: warning: variable ‘n’ set but not used [-Wunused-but-set-variable] user.cpp:19:22: warning: unused variable ‘z’ [-Wunused-variable] user.cpp:35:20: warning: ‘y’ may be used uninitialized in this function [-Wuninitialized]