Borderou de evaluare (job #520661)

Compilare: user.cpp: In function 'int main()': user.cpp:11:16: warning: unused variable 'n' [-Wunused-variable] user.cpp:11:20: warning: unused variable 'l' [-Wunused-variable] user.cpp:9:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:10:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:28:20: warning: 'd' may be used uninitialized in this function [-Wuninitialized]