Borderou de evaluare (job #384481)

Compilare: user.cpp: In function ‘int main()’: user.cpp:9:9: warning: unused variable ‘n’ [-Wunused-variable] user.cpp:9:13: warning: unused variable ‘i’ [-Wunused-variable] user.cpp:9:15: warning: unused variable ‘j’ [-Wunused-variable] user.cpp:7:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:8:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]