自增运算a++和++b（1）
#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
uchar code f[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
sbit wela=P1^1;
sbit dula=P1^0;
sbit jian=P2^4;
sbit jian2=P2^5;
uchar a=0,b=0,c;
uchar key_1(void);
uchar key_2(void);
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=150;y>0;y--);
}
void main()
{
uchar a=0,b=0,i,dis_a,dis_b;
while(1)
{
dis_a=f[a++];
dis_b=f[++b];
for(i=0;i<250;i++)
{
dula=1;
P0=dis_a;
dula=0;
P0=0xff;
wela=1;
P0=0xfe;
wela=0;
delay(5);
dula=1;
P0=dis_b;
dula=0;
P0=0xff;
wela=1;
P0=0xfd;
wela=0;
delay(5);
}
if((a==9)||b==9) while(1);
}
}
补充：软件开发 , C++ ,
