Borderou de evaluare (job #38965)

Compilare: user.cpp: In function ‘int main()’: user.cpp:8:11: warning: unused variable ‘k’ [-Wunused-variable] user.cpp:8:13: warning: unused variable ‘ok’ [-Wunused-variable] user.cpp:8:20: warning: unused variable ‘x’ [-Wunused-variable] user.cpp:8:22: warning: unused variable ‘a’ [-Wunused-variable] user.cpp:8:24: warning: unused variable ‘b’ [-Wunused-variable] user.cpp:14:12: warning: ‘j’ may be used uninitialized in this function [-Wuninitialized]