Borderou de evaluare (job #268158)

Compilare: user.cpp: In function ‘int main()’: user.cpp:6:18: warning: variable ‘f’ set but not used [-Wunused-but-set-variable] user.cpp:6:24: warning: unused variable ‘pe’ [-Wunused-variable] user.cpp:6:27: warning: unused variable ‘ca’ [-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] user.cpp:9:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:21:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:26:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]