why wont getline() work?

im working through TICPP one and i cant seem to get getline() to work;

i am actually having a new problem. ive gotten getline to work. i was just reading from the wrong stream. but now i cant seem to get the output in normal text rather then hex?

0x22fdb4 is what i get. when i want to output the whole string

Code:

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#include <iostream>
#include <string>
#include <fstream>

using namespace std;

int main(){
   
    string msg = "this is a string";
    ofstream space_fileA ("spaces.txt");
    space_fileA<< msg;
    space_fileA.close();
    ifstream space_fileB ("spaces.txt");
    space_fileB>> msg;
    getline(space_fileB, msg);
   
}

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any help at all is appreciated

Code:

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#include <iostream>
#include <string>
#include <fstream>

using namespace std;

int main(){
    string msg = "this is a string";
    string msg2;
    ofstream space_fileA ("spaces.txt");
    space_fileA<< msg;
    space_fileA.close();
    ifstream space_fileB ("spaces.txt");
//    space_fileB>> msg;
    getline(space_fileB, msg2);  // note: B, not A
    cout << msg2 << endl;
}

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