Borderou de evaluare (job #364885)

Compilare: user.cpp: In function ‘int main()’: user.cpp:66:30: warning: statement has no effect [-Wunused-value] user.cpp:30:17: warning: unused variable ‘s’ [-Wunused-variable] user.cpp:26:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:27:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:84:19: warning: ‘elem’ may be used uninitialized in this function [-Wuninitialized]