Eroare de compilare: main.cpp: In member function 'void AIB::add(int, int)': main.cpp:18:17: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 18 | while (i<=n) { | ~^~~ main.cpp: In function 'int main()': main.cpp:57:18: error: 'cout' is not a member of 'std' 57 | std::cout<<aib.sum(b) - aib.sum(a-1)<<"\n"; | ^~~~ main.cpp:3:1: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'? 2 | #include <vector> +++ |+#include <iostream> 3 | Non zero exit status: 1