Borderou de evaluare (job #426555)

Compilare: user.cpp: In function ‘int main()’: user.cpp:20:7: warning: unused variable ‘c1’ [-Wunused-variable] user.cpp:20:10: warning: unused variable ‘a1’ [-Wunused-variable] user.cpp:20:19: warning: variable ‘cn’ set but not used [-Wunused-but-set-variable] user.cpp:20:31: warning: variable ‘j’ set but not used [-Wunused-but-set-variable] user.cpp:21:6: warning: variable ‘a’ set but not used [-Wunused-but-set-variable] user.cpp:18:29: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:19:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:32:5: warning: ‘n’ is used uninitialized in this function [-Wuninitialized]