Converting a string with a hexadecimal representation of a number to an actual numeric value

Question

I have a string like this:

\"00c4\"

And I need to convert it to the numeric value that would be expressed by the literal:

0         


        

Answer 1

std::string val ="00c4";
uint16_t out;
if( (std::istringstream(val)>>std::hex>>out).fail() )
{ /*error*/ }