Borderou de evaluare (job #68901)

Compilare: user.cpp: In function ‘int main()’: user.cpp:6:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] 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:16:13: warning: ‘zx’ may be used uninitialized in this function [-Wuninitialized] user.cpp:12:26: warning: ‘zprec’ may be used uninitialized in this function [-Wuninitialized]