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我正在尝试用蜂鸣器制作 PIR 传感器。使用 Silicon Labs IDE,我能够编译和运行代码,但代码陷入无限循环。如何跳出无限循环?

while(1)
{
  int i;
  char pass[pass_size];
  keypad(pass,pass_size);
  i=0;
}
if(strncmp(pass,"4201",4)==0)
{`
  accept();
  lcdcmd(1);
  lcdstring("Access Granted ");
  delay(300);`
 }`
else 
{
  lcdcmd(1);
  lcdstring("Access Denied");
  wrong();
  delay(300);
}
}
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