Borderou de evaluare (job #204379)

Compilare: user.cpp: In function ‘int main()’: user.cpp:7:27: warning: unused variable ‘nr’ [-Wunused-variable] user.cpp:5:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:6:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:48:21: warning: ‘val’ may be used uninitialized in this function [-Wuninitialized]