How to print out the contents of a vector?

Question

I want to print out the contents of a vector in C++, here is what I have:

#include 
#include 
#include 
#include         


        

Answer 1

overload operator<<:

template
OutStream& operator<< (OutStream& out, const vector& v)
{
    for (auto const& tmp : v)
        out << tmp << " ";
    out << endl;
    return out;
}

Usage:

vector  test {1,2,3};
wcout << test; // or any output stream