Borderou de evaluare (job #50249)

Compilare: user.cpp: In function ‘int main()’: user.cpp:7:39: warning: variable ‘c3n’ set but not used [-Wunused-but-set-variable] user.cpp:7:43: warning: variable ‘c’ set but not used [-Wunused-but-set-variable] user.cpp:7:48: warning: variable ‘io’ set but not used [-Wunused-but-set-variable] user.cpp:7:51: warning: variable ‘ioo’ set but not used [-Wunused-but-set-variable] user.cpp:5:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:6:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]