Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:17:57: error: cannot convert ‘double (*)(double)throw ()’ to ‘double’ for argument ‘1’ to ‘double floor(double)’ cout << double(sqrt(o)) << ' ' << floor(sqrt) ^ user.cpp:19:13: error: expected ‘;’ before ‘for’ for(int i = o + o ; i <= b ; i = i + o) ^ user.cpp:19:35: warning: statement has no effect [-Wunused-value] for(int i = o + o ; i <= b ; i = i + o) ^ user.cpp:19:51: error: expected ‘;’ before ‘)’ token for(int i = o + o ; i <= b ; i = i + o) ^ user.cpp:30:8: warning: unused variable ‘nr’ [-Wunused-variable] int nr = b - a ; ^