蓝桥杯错误记录-原因是：在动态显示的函数里的延迟函数，我用了第二个在等待的时候扫描的延时。

#include <STC15F2K60S2.H>
unsigned char num;
unsigned char code Duan[22]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x80,
0xc6,0xc0,0x86,0x8e,0xbf,0x7f,0XC1,0X8C,0XC8,0xc3};
void shumadong();
void suocun(unsigned char n)
{
	switch(n)
	{
		case 4:P2 = (P2 & 0x1f)|0x80;break;
		case 5:P2 = (P2 & 0x1f)|0xa0;break;
		case 6:P2 = (P2 & 0x1f)|0xc0;break;
		case 7:P2 = (P2 & 0x1f)|0xe0;break;
	}
}

void shuma(unsigned char wei ,unsigned char shu)
{
	suocun(6);
	P0=0x01<<wei;
	suocun(7);
	P0=Duan[shu];
}
void Delay(unsigned int t)
{
while(t--);
}
void Delay_shuma(unsigned int t)
{
	while(t--)
	{
			shumadong();
	}
}
void shumadong()
{
	shuma(0,1);
	Delay(500);
	shuma(2,num);
	Delay(500);
	
}

void main()
{
	while(1)
	{
		shumadong();
		num+=1;
		if(num>9)
		{
			num=0;
		}
		Delay_shuma(100);
	}
}