From: "Valmont" <news AT valmont1 DOT freeserve DOT co DOT uk>
Newsgroups: comp.os.msdos.djgpp
Subject: Commands?
Date: Sun, 3 Oct 1999 18:44:18 +0100
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

I'm a complete novice to programming in C++, and am having a bit of a
headache with the headers.

I'm learning from a book by Horstmann ("Computing Concepts with C++
Essentials 2nd edition") which uses all ANSI standard commands, but the
newest version of DJGPP that I am using doesn't recognise half of them - in
particular those relating to strings.

How can I get a list of the commands that each library contains - ie what's
in <string>, <iostream>, <cmath>, etc?  I don't seem to be getting any help
from the programme or its FAQs about this.

All I want to do is assign a "string" variable and slice it up into little
sections (like below), but it just won't let me!!


#include <iostream.h>
#include <string.h>

int main (void)
{
 string figure, f1, f2;
 int word_length, position, position1;

 cout << "Give me a number between 999 and 99999 -> ";
 cin >> figure;

 word_length = figure.length();

 position = Long%3;
 position1 = position - 1;

 f1 = figure.substr(0,position-1);
 f2 = figure.substr(position, word_length);

 figure = f1 + "," + f2;

 cout << "With a comma that is written " << figure << ".";

 return 0;
}