我在蜂鸣器仿真的过程中，即使按钮没有按下去，它仍然在响。为什么？这是程序：
#include <reg51.h>
sbit BUZZER = P0^0;
sbit BUTTON = P3^2;
void sound ();
int i,n=60;
void main (void)
{
if (BUTTON ==0)
sound ();
}
void sound ()
{
BUZZER =1;
for (i=1;i<n;i++);
BUZZER =0;
for (i=1;i<n;i++);
}
#include <reg51.h>
sbit BUZZER = P0^0;
sbit BUTTON = P3^2;
void sound ();
int i,n=60;
void main (void)
{
if (BUTTON ==0)
sound ();
}
void sound ()
{
BUZZER =1;
for (i=1;i<n;i++);
BUZZER =0;
for (i=1;i<n;i++);
}
{var%20f='http://v.t.sina.com.cn/share/share.php?appkey=1515056452',u=z||d.location,p=['&url=',e(u),'&title=',e(t||d.title),'&source=',e(r),'&sourceUrl=',e(l),'&content=',c||'gb2312','&pic=',e(p||'')].join('');function%20a(){if(!window.open([f,p].join(''),'mb',['toolbar=0,status=0,resizable=1,width=440,height=430,left=',(s.width-440)/2,',top=',(s.height-430)/2].join('')))u.href=[f,p].join('');};if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else%20a();})(screen,document,encodeURIComponent,'','','https://www.xiaopingtou.cn/data/attach/logo/logo.png', '推荐 limenmen 的问题《蜂鸣器仿真求解》','https://www.xiaopingtou.net/q-42745.html','页面编码gb2312|utf-8默认gb2312'));){kind=link}
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sbit BUZZER = P0^0;
sbit BUTTON = P3^2;
void sound ();
int i,n=60;
void main (void)
{
BUZZER =0； while(1)
{
if (BUTTON ==0)
sound ();
}
}
void sound ()
{
BUZZER =1;
for (i=1;i<n;i++);
BUZZER =0;
for (i=1;i<n;i++);
}
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