Compilare: user.cpp: In function ‘long long int bsearch()’: user.cpp:73:17: warning: unused variable ‘ghh’ [-Wunused-variable] int ghh = 0; ^ user.cpp:74:17: warning: unused variable ‘f’ [-Wunused-variable] int f = 0; ^ user.cpp: In function ‘void read()’: user.cpp:11:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("frac.in", "r", stdin); ^ user.cpp:12:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("frac.out", "w", stdout); ^ user.cpp:13:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld %lld", &N, &P); ^