Borderou de evaluare (job #423083)

Compilare: user.cpp: In function ‘int main()’: user.cpp:24:25: warning: unused variable ‘x’ [-Wunused-variable] user.cpp:24:29: warning: unused variable ‘l’ [-Wunused-variable] user.cpp:22:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:23:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:78:18: warning: ‘poz’ may be used uninitialized in this function [-Wuninitialized]