string to float conversion?

Question

I\'m wondering what sort of algorithm could be used to take something like \"4.72\" into a float data type, equal to

float x = 4.72;

Answer 1

For C++ you can use boost::lexical_cast:

   std::string str( "4.72" );
   float x = boost::lexical_cast< float >( str );

For C you can use sscanf:

   char str[]= "4.72";
   float x;
   sscanf( str, "%f", &x );