#include <iostream>
#include <string>

#define cout std::cout <<

int main()
{
  std::string mystr = "ruzip";    
  cout "Hello, " + mystr + ".\n";
}

#include <iostream>
#include <string>
#include <concepts>
#include <iomanip>

namespace fancy_plus // best not to pollute the global unnamed namespace
{
    template < typename T > // output_streamable type - an object of type T can be sent to std::ostream
    concept output_streamable = requires( std::ostream& stm, const T& v )
    { { stm << v } -> std::same_as<std::ostream&> ; } ;

    template < output_streamable T > // T is an output_streamable type
    std::ostream& operator + ( std::ostream& stm, const T& v ) { return stm << v ; }
}

int main()
{
    using fancy_plus::operator+ ; // bring fancy_plus::operator+ into scope

    const std::string str = "abcd" ;

    std::cout + "string " + std::quoted(str) + "  int " + std::setfill('*') + std::setw(7) + 1234
              + "  double " + std::fixed + std::setprecision(8) + 56.78 + '\n' ;
}