I made this Kata for beginners. It may be trival for you, but it will help beginners.
thank you.

I used vector this time thank you

if there was multiple closest values return first closest value.

//no need to use a loop

a.erase(0,1);
a.erase(a.size()-1,1);
return a;

The auto keyword in C++ automatically detects and assigns a data type to the variable with which it is used. The compiler analyses the variable's data type by looking at its initialization.
so in my case maybe the compiler takes longer time to compile the code but if I write std::string or auto they will do the same job

Thank you so much

Can someone explain to me what happens in the last line? return *p = 0, string;