Borderou de evaluare (job #487625)

Compilare: user.cpp: In function 'int main()': user.cpp:10:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:11:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:26:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:35:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:9:5: warning: 'n' is used uninitialized in this function [-Wuninitialized] user.cpp:10:5: warning: 'k' is used uninitialized in this function [-Wuninitialized]