蓝桥杯板子完成一个花式流水灯 :①L1-L8全部一起闪烁三次 ; ②L1闪烁三次 ③ L1---L8--L1-L8往返流水灯三次 ④ 从最两端的两个LED流向中间，再流向两边，重复三重复②--- ④ 的过程。

以下是实现花式流水灯的代码：

#include <reg52.h>

sbit L1 = P1^0;
sbit L2 = P1^1;
sbit L3 = P1^2;
sbit L4 = P1^3;
sbit L5 = P1^4;
sbit L6 = P1^5;
sbit L7 = P1^6;
sbit L8 = P1^7;

void delay(unsigned int t)
{
    while(t--);
}

void all_flash(int n)
{
    int i;
    while(n--)
    {
        L1 = L2 = L3 = L4 = L5 = L6 = L7 = L8 = 0;
        delay(50000);
        L1 = L2 = L3 = L4 = L5 = L6 = L7 = L8 = 1;
        delay(50000);
    }
}

void L1_flash(int n)
{
    int i;
    while(n--)
    {
        L1 = 0;
        delay(50000);
        L1 = 1;
        delay(50000);
    }
}

void flow_flash(int n)
{
    int i;
    while(n--)
    {
        L1 = 0;
        L2 = 0;
        L3 = 0;
        L4 = 0;
        L5 = 0;
        L6 = 0;
        L7 = 0;
        L8 = 0;
        delay(50000);
        L1 = 1;
        delay(50000);
        L2 = 1;
        delay(50000);
        L3 = 1;
        delay(50000);
        L4 = 1;
        delay(50000);
        L5 = 1;
        delay(50000);
        L6 = 1;
        delay(50000);
        L7 = 1;
        delay(50000);
        L8 = 1;
        delay(50000);
        L8 = 0;
        delay(50000);
        L7 = 0;
        delay(50000);
        L6 = 0;
        delay(50000);
        L5 = 0;
        delay(50000);
        L4 = 0;
        delay(50000);
        L3 = 0;
        delay(50000);
        L2 = 0;
        delay(50000);
        L1 = 0;
        delay(50000);
        L1 = 1;
        delay(50000);
        L2 = 1;
        delay(50000);
        L3 = 1;
        delay(50000);
        L4 = 1;
        delay(50000);
        L5 = 1;
        delay(50000);
        L6 = 1;
        delay(50000);
        L7 = 1;
        delay(50000);
        L8 = 1;
        delay(50000);
    }
}

void wave_flash(int n)
{
    int i;
    while(n--)
    {
        L1 = 0;
        L8 = 0;
        delay(50000);
        L2 = 0;
        L7 = 0;
        delay(50000);
        L3 = 0;
        L6 = 0;
        delay(50000);
        L4 = 0;
        L5 = 0;
        delay(50000);
        L5 = 1;
        L4 = 1;
        delay(50000);
        L6 = 1;
        L3 = 1;
        delay(50000);
        L7 = 1;
        L2 = 1;
        delay(50000);
        L8 = 1;
        L1 = 1;
        delay(50000);
    }
}

void main()
{
    all_flash(3);
    L1_flash(3);
    flow_flash(3);
    wave_flash(3);
}

这个代码实现了题目中要求的四个花式流水灯效果。