Borderou de evaluare (job #8745)

Compilare: user.cpp: In function ‘int main()’: user.cpp:45:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:45:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:47:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:48:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:55:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:56:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:19:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:20:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:21:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:23:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:25:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:27:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:46:32: warning: ‘j’ may be used uninitialized in this function [-Wuninitialized]