[FZH] C 语言的疑问

Caius 'kaio' Chance kaio at fedoraproject.org
Fri Jun 3 06:31:55 UTC 2011


你確定你輸出的不是內存位置,而是數值?

2011/6/3 Robin Lee <robinlee.sysu at gmail.com>

> 不确定是否随机数,但每次都不同
>
> 2011/6/2 Xu Xin <railwaycat at gmail.com>:
> > 2011/6/2 Robin Lee <robinlee.sysu at gmail.com>:
> >> #include <stdio.h>
> >>
> >> int main(int argc, char** argv){
> >>    float f = 3.5f;
> >>    printf("%#x\n", f);
> >>    return 0;
> >> }
> >>
> >>
> >> 上面的代码在我机器(Linux x86_64)上编译运行,输出的是随机数。怎样解释这个现象?
> >> 在32位操作系统上,则总是输出0 。这又如何解释?
> >> _______________________________________________
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> >>
> > 你确定是随机数?每次输出的结果都不一样么?
> >
> > 你的代码是用 无符号整形 的格式输出了一个 IEEE 浮点数。
> >
> > --
> > 枕流漱石
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