gistfile1.c

NSMutableArray *abEmailAddresses = [NSMutableArray array];
    NSMutableArray *abPhoneNumbers = [NSMutableArray array];
    
    ABAddressBookRef addressBook = ABAddressBookCreate();
    CFArrayRef people = ABAddressBookCopyArrayOfAllPeople(addressBook);
    for (CFIndex i = 0; i < CFArrayGetCount(people); ++i) {
        ABRecordRef aRecord = CFArrayGetValueAtIndex(people, i);
        
        // phone numbers
        ABMutableMultiValueRef phones = ABRecordCopyValue(aRecord, kABPersonPhoneProperty);
        for (CFIndex j = 0; j < ABMultiValueGetCount(phones); j++) {
            CFStringRef phoneNumber = ABMultiValueCopyValueAtIndex(phones, j);
            [abPhoneNumbers addObject:[NSString stringWithFormat:@"%@", phoneNumber]];
            CFRelease(phoneNumber);
        }
        CFRelease(phones);
        
        // emails
        ABMutableMultiValueRef emails = ABRecordCopyValue(aRecord, kABPersonEmailProperty);
        for (CFIndex j = 0; j < ABMultiValueGetCount(emails); j++) {
            CFStringRef emailAddress      = ABMultiValueCopyValueAtIndex(emails, j);
            [abEmailAddresses addObject:[NSString stringWithFormat:@"%@", emailAddress]];
            CFRelease(emailAddress);
        }
        CFRelease(emails);
    }
    CFRelease(people);
    CFRelease(addressBook);