Borderou de evaluare (job #290679)

Compilare: user.cpp: In function 'int main()': user.cpp:20:31: warning: unused variable 'vlg' [-Wunused-variable] user.cpp:20:35: warning: unused variable 'ok' [-Wunused-variable] user.cpp:20:42: warning: unused variable 'i' [-Wunused-variable] user.cpp:18:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:19:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:21:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:93:21: warning: 'lg2' may be used uninitialized in this function [-Wuninitialized]