C++ Project(urgent help needed) for parameterized constructor

[wanton sandal]

Im trying to turn Implement a parameterized constructor that takes the name of the input file as a reference to string argument. The constructor will read the input file, where each line corresponds to a Book subclass and dynamically allocate Book-derived objects with the information read from the input file and add them to the LibraryRecord.
Also to implement LibraryRecord::displayFilter that takes a reference to string key and displays information of its holdings whenever they key matches the relevant information (specific to the type of book). https://wandbox.org/permlink/RujRlaT7ZX9zcx7j

[nocturne igloo]

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[wanton sandal]

@loud current

[dense jetty]

what is your question?

[wanton sandal]

how can I implement a parameterized constructor that takes the name of the input file as a reference to string argument for LibraryRecord.cpp

Im also trying to read a csv file

i figured to use ifstream

but uhh

j,

hmm

[dense jetty]

do you know how to write a constructor that takes parameters?

[warm harbor]

a constructor is more or less just a function with the same name as a the class it's in

otherwise function params work the same as other functions

so, do you know how to write functions?

[wanton sandal]

uh

any function?

[warm harbor]

basically yes

[wanton sandal]

huh

[warm harbor]

I more mean the understanding of what they are, how they work, how to write them, how to use them

[wanton sandal]

im just

lost

I thought I knew how

havent messed around with fstream and sstream in a whinle

while

[warm harbor]

then review the chapter in your textbook on functions

[wanton sandal]

all I know

is that I have to change book to be come a pointer

rather than the template by itself

and im not streaming in all the values of the csv file

because somehow the book type is the last value

but i have no clue how to fix that

[warm harbor]

it helps to ask a specific question and define the problem rigorously

you've asked a rather broad question that you would mostly know the answer to if you review the chapter on functions

Also to implement LibraryRecord::displayFilter that takes a reference to string key and displays information of its holdings whenever they key matches the relevant information (specific to the type of book).
this isn't specific enough, like I wouldn't be able to take this description and write code for it, at least not code that actually meets whatever the requirements actually are

even if we could write the code for it, doing it for you would be against Rule #5 of the server

I will note that it's a good positive indicator that you seem to almost know how to use wandbox well, like with multiple files and stuff, and that's great

but... it doesn't compile, you're missing some sources and you have a bunch of irrelevant ones

also missing the CSV data file