Compilare: user.cpp: In function ‘int main()’: user.cpp:55: warning: use of ‘ll’ length modifier with ‘f’ type character user.cpp:55: warning: use of ‘ll’ length modifier with ‘f’ type character user.cpp:63: warning: use of ‘ll’ length modifier with ‘f’ type character user.cpp:63: warning: use of ‘ll’ length modifier with ‘f’ type character user.cpp:64: warning: use of ‘ll’ length modifier with ‘f’ type character user.cpp:64: warning: use of ‘ll’ length modifier with ‘f’ type character user.cpp:52: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:53: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:54: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:55: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result