C++ cout auto separator

Question

I am wondering if there is way that std::cout automatically will insert some predefined value between printed sequences.

For example:

st         


        

Answer 1

Simple answer is No, however, you can roll your own...

#include 
#include 

using namespace std;

struct set_some_separator{
    set_some_separator(const char* sep) : _sep(sep)
    { };

    template 
    set_some_separator& operator<<(const T& v)
    {
        _str << v << _sep;
        return *this;
    }

    friend
    ostream& operator<<(ostream& os, const set_some_separator& s)
    { return os << s._str.str(); }

    const char* _sep;
    ostringstream _str;
};

int main()
{
    cout << (set_some_separator(" ") << 2 << 3 << 33 << 45) << endl;
}

Okay the format of the cout is slightly different, hey-ho...