Borderou de evaluare (job #415397)

Compilare: user.cpp: In function ‘int main()’: user.cpp:23:19: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] user.cpp:16:9: warning: unused variable ‘NR’ [-Wunused-variable] user.cpp:8:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:9:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:11:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:12:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]