用C51语言编写1+2+3 +‥‥‥+99+100的求和运算程序

typedef unsigned int uint;

typedef unsigned char uchar;

uchar smgcode[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0x82,0xf8,0x80,0x90,0xff};//共阳数码管

uchar smgbit[]={0xfe,0xfd,0xfb,0xf7};

uchar value[]={0,0,0,0};

void delay(uint x)//延时函数

{

uchar i;

while(x--)for(i=0;i<120;i++);

}

void main(void)

{

uchar i,j;

uint s=0;

for(i=1;i<=100;i++)

s+=i;

value[0]=s;

value[1]=s0/10;

value[2]=s00/100;

value[3]=s000/1000;

while(1)

{

for(j=0;j<4;j++)

{

P1=smgbit[j];

P2=smgcode[value[j]];

delay(10);

}

}

}