Borderou de evaluare (job #21789)

Compilare: user.cpp:54:2: warning: this decimal constant is unsigned only in ISO C90 [enabled by default] user.cpp: In function 'int main()': user.cpp:54:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:37:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:38:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:39:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:42:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]