C++ Institute Exam CPP Topic 4 Question 72 Discussion

What happens when you attempt to compile and run the following code?

#include

#include

#include

#include

using namespace std;

class B { int val;

public:

B(int v=0):val(v){}

int getV() const {return val;}

B operator +(const B &b )const { return B(val + b.val);} };

ostream & operator <<(ostream & out, const B & v) { out<

templatestruct Out {

ostream & out;

Out(ostream & o): out(o){}

void operator() (const T & val ) { out<

template struct Add : public binary_function {

A operator() (const A & a, const A & b) const { return a+b; }};

int main() {

int t[]={1,2,3,4,5,6,7,8,9,10};

vector v1(t, t+10);

vector v2(10);

transform(v1.begin(), v1.end(), v2.begin(), bind1st(ptr_fun (Add()), 1));

for_each(v2.rbegin(), v2.rend(), Out(cout));cout<

return 0;

}

Program outputs: