method to add to file

[needhelp101]

I am a beginner in programming, and I am trying to write a program which involves linked list. i have to create a method called add_aa( str ). I am reading from a text file. in the text file it just contains the values for str. what I am trying to do is create the method add_aa( str ) and add what corresponds to str from the file. here is what the output should look like. and what i have is very basic. here is what i have

 inline void LList:: add_aa(const string _str)
{
	cout << "\tp = " << std::hex << p << std::dec << '\n'; 
}

I'm thinking using a for statement, but have no idea how to incorporate it

[weaknessforcats]

Not enough code here to even begin advising you.