novacreatura@gmail.com wrote:[color=blue]
> Hi,
>
> I have a project that's supposed to create a program for a "Dating
> Service". The first part of the program is to read a textfile of
> profiles which include names, age, etc...into a string array, and be
> able to add,edit,remove to the textfile of profiles during runtime.
> What would be the most efficient way to do this to make it easiest as
> possible to make changes to the textfile during time and access
> elements of the array?
>
> john[/color]
First, don't use an array or a raw buffer; use a std::vector of
std::strings (see
http://www.parashift.com/c++-faq-lit...html#faq-34.1). If you
do this, use the getline function, something like this:
ifstream file( "dating.txt" );
vector<string> v;
string line;
while( getline( file, line ) )
{
v.push_back( line );
}
// Now process the vector of strings
Alternately, you might consider implementing an extraction operator for
your data structure. Something like:
struct Person
{
string first, last;
unsigned int age;
// ...
};
istream& operator>>( istream& is, Person& p )
{
is >> p.first >> p.last >> p.age;
return is;
}
Then you could use it like this:
vector<Person> v;
Person p;
while( file >> p )
{
v.push_back( p );
}
// Now process the vector of People
Note that you can't generally modify data in the middle of a file (e.g.
by seeking to a certain point and trying to overwrite the data), so you
may need to write the entire data file each time.
Cheers! --M
