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From: "A. Sinan Unur" <asu1 AT cornell DOT edu>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Newbie Division Operator Question
Date: 14 Mar 2002 13:14:17 GMT
Organization: Cornell University
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zandro_arceo AT support DOT trendmicro DOT com (IeperNaum) wrote in 
news:d26d20a2 DOT 0203140257 DOT 6365ae0e AT posting DOT google DOT com:

> #define __int64 long long
> 
> unsigned __int64 x = 268486768;
> 
> unsigned __int64 y = x/10000000;
> 
> i expect y = 26 
> but y = 4065811060.
> 
> can anybody please explain to me why?

it is either the #define rather than typedef getting in your way, or you 
are not specifying the conversion specifier in printf correctly.

read the printf docs by invoking info in the following way:

info libc alpha printf

C:\develop\src\misc>cat d.c
#include <stdio.h>

typedef unsigned long long myuint64;

static void doit(void)
{
        myuint64 x = 268486768;
        myuint64 y = x/10000000;

        printf("y = %llu\n", y);

        return;
}

int main(void)
{
        doit();
        return 0;
}

C:\develop\src\misc>gcc -Wall d.c -o d.exe

C:\develop\src\misc>d
y = 26