From: "Chewbaklava" <kalit AT ctel DOT net>
Newsgroups: comp.os.msdos.djgpp
Subject: Compile trouble
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Date: Mon, 3 Jan 2000 21:00:14 -0500
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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 created a small program to roll up a Dungeons and Dragons(role playing
game, not computer) character.  It worked fine, then I added a function to
center the output, and I am getting 2 'undefined reference to main' link
errors.  I have checked my syntax, although I miss stuff like that rather
easily.

Also, in the line for(int i = 0; i < (80 - leng) / 2; i++), does i go out of
scope at the end of the for loop??

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

volatile int count;

class PC
{
 public:
 int strength;
 int inteligence;
 int wisdom;
 int dexterity;
 int constitution;
 int charisma;

 void random_scores()
 {
  strength = (rand() % 15) + 3;
  inteligence = (rand() % 15) + 3;
  wisdom = (rand() % 15) + 3;
  dexterity = (rand() % 15) + 3;
  constitution = (rand() % 15) + 3;
  charisma = (rand() % 15) + 3;
 }

 void print_scores()
 {
  cout << "\n       Strength -  " << strength;
  cout << "\n    Inteligence -  " << inteligence;
  cout << "\n         Wisdom -  " << wisdom;
  cout << "\n      Dexterity -  " << dexterity;
  cout << "\n   Constitution -  " << constitution;
  cout << "\n       Charisma -  " << charisma;
 }
};

void timer_handler()
{
 count++;
}
END_OF_FUNCTION(timer_handler);

void center(char *strng)
{
 size_t leng;  //  Length of string

 leng = strlen(strng);
 cout << "\n";

 for (int i = 0; i < (80 - leng) / 2; i++)
  cout << " ";

 cout << strng;
}

int main()
{
 int randomizer;  //  The variable to initialize the random number generator
 PC Character;    //  The Character to be created

 allegro_init();
 install_keyboard();

 //  Title page and the setting of the random number generator seed.

 center("*****  Dungeons and Dragons Character Generator  *****\n");
 center("*****  Version 1.0B  *****\n\n");
 center("This program will generate the random\n");
 center("numbers to create a basic Duneons and\n");
 center("Dragons character.  This is just the title\n");
 center("page, but I needed it to set the seed for the\n");
 center("random number generator, which must be varying\n");
 center("from program execution to program execution.\n\n");
 center("So, when you are ready, press any key to\n");
 center("set the random number generator seed and create a character...\n");


 install_int(timer_handler, 10);
 LOCK_VARIABLE(count);
 LOCK_FUNCTION(timer_handler);

 readkey();

 randomizer = count;
 srand(randomizer);

 Character.random_scores();
 Character.print_scores();

 return 0;
}