Câu 63: CPP: C++ Certified Professional Programmer

What happens when you attempt to compile and run the following code?#include #include #include using namespace std;template struct Out {ostream & out;Out(ostream & o): out(o){}void operator()(const T & val ) {out v1(10);vector v2(10);generate(v1.begin(), v1.end(), Sequence(1));reverse_copy(v1.begin(),v1.end(), v2.rbegin());sort(v2.begin(), v2.end(), less_equal ());for_each(v2.begin(), v2.end(), Out (cout) );cout<<endl; return 0;}Program outputs:

1. A. 1 2 3 4 5 6 7 8 9 10 — đáp án hiện tại
2. B. 10 9 8 7 6 5 4 3 2 1
3. C. no output
4. D. compilation error