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程序(未检查出问题和危险)#include<reg51.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
#define LED P2
uchar n;
void delay(uint i);
uint b,c;
void delay(uint i)
{
for(b=i;b<0;b--)
{
for(c=110;c<0;c--);
}
}
void main()
{
LED=0x01;
while(1)
{
for(n=0;n<7;n++)
{
LED=_crol_(LED,1);
delay(100);
}
for(n=0;n<7;n++)
{
LED=_cror_(LED,1);
delay(100);
}
}
}
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