Câu 28: CPP: C++ Certified Professional Programmer

What happens when you attempt to compile and run the following code?#include #include #include using namespace std;class B { int val;public:B(int v):val(v){}int getV() const {return val;} bool operator struct Out { ostream & out;Out(ostream & o): out(o){}void operator() (const T & val ) { out v1(10,0);sort(t1, t1+5);sort(t2, t2+5);set_symmetric_difference(t2,t2+5,t1,t1+5,v1.begin());for_each(v1.begin(), v1.end(), Out (cout));cout<<endl; return 0;}Program outputs:

1. A. 6 8 3 4 0 0 0 0 0 0
2. B. 3 4 0 0 0 0 0 0 0 0
3. C. 6 8 0 0 0 0 0 0 0 0
4. D. compilation error
5. E. 3 4 6 8 0 0 0 0 0 0 — đáp án hiện tại