loading a string from file

[Allan Bruce]

I want to load config from a file. I know how to load in numbers using an
ifstream, but I cant get it to load a string. Can somebody tell me how to
load a string from file? Here is my code:
int mNumServers;
short *mPorts;
std::string *mServers;
std::string *mPaths;

std::ifstream infile(HST_SERVERS_FILE);
infile >> mNumServers;
AllocServersMem();
for (int i=0; i<mNumServers; i++)
{
std::string temp;
// XXX how do I load a string easily?
//infile >> mServers[i];
//infile >> mPaths[i];
infile >> mPorts[i];
}
infile.close();
I get an error saying that:
error C2679: binary '>>' : no operator found which takes a right-hand
operand of type 'std::string' (or there is no acceptable conversion)

Thanks
Allan

[Kevin Goodsell]

Allan Bruce wrote:

I want to load config from a file. I know how to load in numbers using an
ifstream, but I cant get it to load a string. Can somebody tell me how to
load a string from file? Here is my code:
int mNumServers;
short *mPorts;
std::string *mServers;
std::string *mPaths;

std::ifstream infile(HST_SERVERS_FILE);
infile >> mNumServers;
AllocServersMem();
for (int i=0; i<mNumServers; i++)
{
std::string temp;
// XXX how do I load a string easily?
//infile >> mServers[i];
//infile >> mPaths[i];
infile >> mPorts[i];
}
infile.close();
I get an error saying that:
error C2679: binary '>>' : no operator found which takes a right-hand
operand of type 'std::string' (or there is no acceptable conversion)

Give us a minimal complete program that demonstrates the problem. As it
is, I don't believe you've provided sufficient information to diagnose
the problem.

-Kevin
--
My email address is valid, but changes periodically.
To contact me please use the address from a recent posting.

[Allan Bruce]

"Kevin Goodsell" <us*********************@neverbox.com> wrote in message
news:uU*****************@newsread2.news.pas.earthl ink.net...

Allan Bruce wrote:

I want to load config from a file. I know how to load in numbers using an ifstream, but I cant get it to load a string. Can somebody tell me how to load a string from file? Here is my code:
int mNumServers;
short *mPorts;
std::string *mServers;
std::string *mPaths;

std::ifstream infile(HST_SERVERS_FILE);
infile >> mNumServers;
AllocServersMem();
for (int i=0; i<mNumServers; i++)
{
std::string temp;
// XXX how do I load a string easily?
//infile >> mServers[i];
//infile >> mPaths[i];
infile >> mPorts[i];
}
infile.close();
I get an error saying that:
error C2679: binary '>>' : no operator found which takes a right-hand
operand of type 'std::string' (or there is no acceptable conversion)

Give us a minimal complete program that demonstrates the problem. As it
is, I don't believe you've provided sufficient information to diagnose
the problem.

-Kevin

Here is my minumum program and the file I would wish to load:
Thanks
Allan


// LoadServers.cpp
#include <fstream>

#define HST_SERVERS_FILE "servers.dat"

int main()
{
int mNumServers;
short mPorts;
std::string mServers;
std::string mPaths;

std::ifstream infile(HST_SERVERS_FILE);
infile >> mNumServers;

std::string temp;
// XXX how do I load a string easily?
infile >> mServers;
infile >> mPaths;
infile >> mPorts;

infile.close();

return 0;
}

// file to load - servers.dat
1
www.erg.abdn.ac.uk /servlet/WinGalagaHST 80

[Karl Heinz Buchegger]

Allan Bruce wrote:

Make it a habit of yours to include *all* headers you
need for your program (but not more).

Your program uses std::string, thus you ought to

#include <string>

Which also solves your problem.

--
Karl Heinz Buchegger
kb******@gascad.at

[Allan Bruce]

"Karl Heinz Buchegger" <kb******@gascad.at> wrote in message
news:40***************@gascad.at...

Allan Bruce wrote:

Make it a habit of yours to include *all* headers you
need for your program (but not more).

Your program uses std::string, thus you ought to

#include <string>

Which also solves your problem.

Thanks, I thought I was close. What a stupid mistake!
Allan