Borderou de evaluare (job #15194)

Compilare: user.cpp: In function 'int main()': user.cpp:56:15: warning: array subscript has type 'char' [-Wchar-subscripts] user.cpp:57:9: warning: unused variable 'n' [-Wunused-variable] user.cpp:50:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:51:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]