非常短的呼吸灯程序

#include
#define uchar unsigned char
#define uint unsigned int
#define limit 100
sbit LED=P1^4;
void delay(uint ms)
{
uint i=0,j=0;
for(i=ms;i>0;i--)
for(j=123;j>0;j--);
}

void main()
{
uint t=50;
char d=1;
while(t+=d)
{
LED=t%2;
delay(t*(LED==1)+(limit-t)*(LED==0));//这条代码很巧妙的实现了两个状态的切换
if(t>=95||t<=5) d=-d;
}
}