Converting a number to a std::string

There are no obvious functions in pure C++ (lots in C!) to convert a number into an std::string. The way to do this is by using a stringstream, i.e.

#include<iostream>
 
#include<sstream>
std::string NumToString(double num)
{
  std::stringstream s;
  s << num;
  return s.str();
}
 
int main()
{
  double anum=3.141592;
  std::string str = NumToString(anum);
 
  std::cout << "Here is our string: "<< str << std::endl;
}

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