Borderou de evaluare (job #525075)

Compilare: user.cpp: In function 'int main()': user.cpp:9:9: warning: statement has no effect [-Wunused-value] user.cpp:12:13: warning: statement has no effect [-Wunused-value] user.cpp:8:35: warning: unused variable 'w' [-Wunused-variable] user.cpp:10:5: warning: 'n' is used uninitialized in this function [-Wuninitialized] user.cpp:17:13: warning: 'a' may be used uninitialized in this function [-Wuninitialized] user.cpp:33:13: warning: 'k' may be used uninitialized in this function [-Wuninitialized]