Question

So I’m trying to get a sort function to work. It should sort by firstname, but if the first names are the same it should sort by last names. I keep getting an error in mySort() that says “unexpected primary-expression before ‘)’ token” on line where inOrder = arr. What’s happening to this and how can I fix it? I need to pass my objects into a function in a seperate class. I’ll link them in pastebin.

Here’s the driver

#include <iostream> 
#include <fstream>
#include <string>
#include "phoneEntry.h"
using namespace std;

void mySort(PhoneEntry& arr, int size)
{
    bool inOrder = false;
    for (int i = size - 1; i > 0 && !inOrder; i--)
    {
        inOrder = true;
        for (int j = 0; j < i; j++)
        {
            inOrder = arr.alphaGreater(arr&);
        }
    }
};

int main()
{   
    const int MAXNUM = 500;
    PhoneEntry entry[MAXNUM];
    ifstream filezilla;
    filezilla.open("phone.txt");
    int count = 0;

    if(filezilla)
    {
        while(count < MAXNUM && entry[count].readEntry(filezilla))
        {
            count++;
        }
        mySort(entry&, count);
        for(int i = 0; i < count; i++)
        {
            entry[i].writeEntry(cout) << endl;
        }
    }
    else
    {
        cout << "Four Oh Four - File Not Found" << endl;
    }

    return 0;
}

Phone Entry Header

Phone Number Header

Sorting Text (http://pastebin.com/HE8Rsmbg)

Answer 1

You want to pass a reference, so the argument has to be defined as call-by-reference in the function definition/declaration, which is already done:

bool PhoneEntry::alphaGreater(const PhoneEntry& item) const;

As you can see, PhoneEntry::alphaGreater takes a constant PhoneEntry reference. So simply use

inOrder = arr.alphaGreater(arr);