Borderou de evaluare (job #45238)

Compilare: user.cpp: In function ‘int main()’: user.cpp:7:11: warning: unused variable ‘f’ [-Wunused-variable] user.cpp:7:21: warning: unused variable ‘j’ [-Wunused-variable] user.cpp:7:23: warning: variable ‘k’ set but not used [-Wunused-but-set-variable] user.cpp:5:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:6:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:9:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]