Borderou de evaluare (job #14624)

Compilare: user.cpp: In function 'int main()': user.cpp:9:43: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:10:45: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:52:28: warning: 'u4' may be used uninitialized in this function [-Wuninitialized] user.cpp:52:24: warning: 'u3' may be used uninitialized in this function [-Wuninitialized] user.cpp:52:15: warning: 'u2' may be used uninitialized in this function [-Wuninitialized] user.cpp:52:11: warning: 'u1' may be used uninitialized in this function [-Wuninitialized] user.cpp:51:28: warning: 'p4' may be used uninitialized in this function [-Wuninitialized] user.cpp:51:24: warning: 'p3' may be used uninitialized in this function [-Wuninitialized] user.cpp:51:15: warning: 'p2' may be used uninitialized in this function [-Wuninitialized] user.cpp:51:11: warning: 'p1' may be used uninitialized in this function [-Wuninitialized]