From: "A.Appleyard" <A DOT APPLEYARD AT fs2 DOT mt DOT umist DOT ac DOT uk>
To: djgpp AT sun DOT soe DOT clarkson DOT edu
Date: Mon, 11 Dec 1995 09:02:34 GMT
Subject: Re: wierd "bug" in my program?

  aue AT u DOT washington DOT edu (A. Aue) wrote (Subject: wierd "bug" in my program?):-

> Help! I'm having a really strange problem with the bridge program I'm
> writing under djgpp ...

  ELEMENTARY!!!!!! Most of the times when he has declared an array x[n], he
runs the array subscripts from x[1] to x[n]. This is OK for Fortran, but
WRONG!!! for C and C++. If a C or C++ array is declared say x[n], the valid
elements of x run from x[0] to x[n-1] !!!!!

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
typedef struct hand {char name[30]; int cards[13],clubs[13],diamonds[13],
    hearts[13],spades[13],numclubs,numdiamonds,numhearts,numspades,hcp,dp,tp,
    turn,bid; } Hand;
/*-----*/
main() { Hand hands[4]; int n;
void initialize (Hand[]); void deal (Hand[]);
printf("begin main");
initialize (hands); deal (hands); printf("hello.");
for (n=1; n<=13; ++n) printf("South %d west %d north %d east %d\n",
    hands[1].cards[n], hands[2].cards[n], hands[3].cards[n], hands[4].cards[n]);
printf("end main."); }
...