Learning C++/lua - Printable Version

Learning C++/lua - Printable Version

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Learning C++/lua - NiLSPACE - 12-04-2012

Does anyone know why this code:

Quote:#include <iostream>
#include <stdio.h>
int main()
{
cout << "IT WORKS!\n";
cout << "\nPress Enter to continue" << endl;
getchar();
return 0;
}

doesn't work? i get an error in the
cout << "IT WORKS!\n";
cout << "\nPress Enter to continue" << endl;

RE: Learning C++ - FakeTruth - 12-04-2012

use std::cout instead of just cout

Also, next time you get an error, be sure to post the actual error message

RE: Learning C++ - NiLSPACE - 12-04-2012

thank you Smile

its weard because the book says "cout" not "std::cout" :O

RE: Learning C++ - FakeTruth - 12-04-2012

maybe somewhere they have a

Code:
using namespace std;

RE: Learning C++ - xoft - 12-05-2012

In older C++, cout used to be global, you could use it without the std prefix. But that was years ago, and only in some compilers.

RE: Learning C++ - NiLSPACE - 12-10-2012

thanks,

i'm now trying to make a configuration file just like with my build script but than in c++ just to practise.
i'm now struggeling that i can't put letters in a variable. with the server description part if i now put letters in it, it says 0 in the settings.ini.
if you want to look in the "source" this is it:

Code:
#include <iostream>

#include <fstream>

using namespace std;

//the remove part

int Remove()

{

  if( remove( "Settings.ini" ) != 0 )

    perror( "Error deleting file" );

  else

    puts( "File successfully deleted" );

  return 0;

}

//the server configuration

int main() 

{

int Port;

  int MaxPlayers;

  int Description;

    cout << "Please Enter your server port (default minecraft is 25565): ";

    cin >> Port;

    cout << "Please enter the maxplayers able to join: ";

    cin >> MaxPlayers;

    cout << "Please enter your server description: ";

    cin >> Description;

  ofstream myfile;

  myfile.open ("settings.ini");

  myfile << "[Server]\n" << "port=" << Port << "\nmaxplayers=" << MaxPlayers << "\nDescription=" << Description;

  myfile.close();

  return 0;

}

RE: Learning C++ - FakeTruth - 12-10-2012

try using

Code:
string Description;

RE: Learning C++ - NiLSPACE - 12-10-2012

it works but i can only have one word. if i type in: New Description
it only shows New Sad

RE: Learning C++ - xoft - 12-10-2012

I suppose that cin operator >> extract only until any whitespace. The solution would be to repeat reading from cin until you get a '\n', and concatenate everything you've read into a string.

I never particularly liked streams, so I've never actually learnt much about them.

Seems there's a std::getline() just for this purpose:
http://www.cplusplus.com/reference/string/getline/

RE: Learning C++ - NiLSPACE - 12-11-2012

yay thanks it works Smile

i can now get things like this:

Quote:[Server]
port=25565
maxplayers=20
Description=Description here please

[Worlds]
DefaultWorld=Wpr;d

[Plugins]
Plugin=Core
Plugin=ChatLog

[HelpPlugin]
ShowPluginNames=1