Borderou de evaluare (job #468543)

Compilare: user.cpp: In function ‘int main()’: user.cpp:41:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:44:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:48:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:27:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:28:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:32:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:35:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:70:29: warning: ‘et’ may be used uninitialized in this function [-Wuninitialized]