#include <stdio.h>
#include <math.h>
int main()
{
int num,indiv,ten,hundred,thousand,ten_thousand,place;
//分别代表个位，十位，百位，千位，万位和位数
printf("请输入一个整数(0~99999):");
scanf(("%d",&sum);
if(num>9999)
place=5;
else if(num>999)
place=4;
else if(num>99)
place=3;
else if(num>9)
place=2;
else place=1;
printf("位数：%d\n",place);
printf("每位数字为：");
ten_thousand=num/10000;
thousand=(int)(num-ten_thousand*10000)/1000;
hundred=(int)(num-ten_thousand*10000-thousand*1000)/100;
ten=(int)(num-ten_thousand*10000-thousand1000-hundred*100)/10;
indiv=(int)(num-trn_thunsand*10000-thousand*1000-hundred*100-ten*10);
switch(place)
{
case 5:printf("%d,%d,%d,%d,%d",ten_thousand,thousand,hundred,ten,indiv);
    printf("\n反序数字为：")；
    printf("%d%d%d%d%d\n",indiv,ten,hundred,thousand,ten_thousand);
    break;
case 4:printf("%d,%d,%d,%d",thousand,hundred,ten,indiv);
    printf("\n反序数字为：")；
    printf("%d%d%d%d%d\n",indiv,ten,hundred,thousand);
    break;
case 3:printf("%d,%d,%d",hundred,ten,indiv);
    printf("\n反序数字为：")；
    printf("%d%d%d\n",indiv,ten,hundred);
    break;
case 2:printf("%d,%d",ten,indiv);
    printf("\n反序数字为：");
    printf("%d%d\n",indiv,ten);
    break;
case 1:printf("%d",indiv);
    printf("\n反序数字为：");
    printf("%d\n",indiv);
    break;
}
return 0;
}