Compile error with templates - no matching function for call

Question

I\'m trying to convert a string to a number. For that, I found the following way:

#include 
#include 

template 
         


        

Answer 1

Try

int b = stringToNumber<int>(a);

Because the template type T can not be deduced from any of the parameters (in this case std::string) you need to explicitly define it.

Answer 2

You haven't supplied a template argument. Note that in C++11, you can use std::stoi:

std::string a = "254";
int b = std::stoi(a);