Borderou de evaluare (job #53098)

Compilare: user.cpp: In function ‘int main()’: user.cpp:23:37: warning: operation on ‘v[((n - i) + 1)]’ may be undefined [-Wsequence-point] user.cpp:7:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:8:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:11:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]