C++: what is the optimal way to convert a double to a string?

Question

What is the most optimal way to achieve the same as this?

void foo(double floatValue, char* stringResult)
{
    sprintf(stringResult, \"%f\", floatV         


        

Answer 1

Herb Sutter has done an extensive study on the alternatives for converting an int to a string, but I would think his arguments hold for a double as well.

He looks at the balances between safety, efficiency, code clarity and usability in templates.

Read it here: http://www.gotw.ca/publications/mill19.htm