Borderou de evaluare (job #472528)

Compilare: user.cpp: In function ‘int main()’: user.cpp:29:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:35:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:79:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:81:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:83:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:85:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:98:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:7:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:8:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]