Borderou de evaluare (job #287969)

Compilare: user.cpp: In function 'int main()': user.cpp:10:34: warning: unused variable 'z' [-Wunused-variable] user.cpp:10:36: warning: unused variable 'xy' [-Wunused-variable] user.cpp:10:39: warning: unused variable 'p2' [-Wunused-variable] user.cpp:53:11: warning: 'x' may be used uninitialized in this function [-Wuninitialized] user.cpp:47:10: warning: 'b' may be used uninitialized in this function [-Wuninitialized] user.cpp:47:10: warning: 'a' may be used uninitialized in this function [-Wuninitialized]