Compilare: user.cpp: In function ‘double sinus(std::pair<double, double>, std::pair<double, double>)’: user.cpp:8:15: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] #define Inf (1<<31-1) ^ user.cpp:18:66: note: in expansion of macro ‘Inf’ if ( p1.first == p2.first && p1.second == p2.second ) return Inf; ^ user.cpp: In function ‘int main()’: user.cpp:8:15: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] #define Inf (1<<31-1) ^ user.cpp:41:26: note: in expansion of macro ‘Inf’ m.first = m.second = Inf; ^