给定一个不多于5位的正整数,要求：①求它是几位数；②分别打印出每一位数字；③按逆序打印出各位数

#include

main()

{longintnum;

intindiv,ten,hundred,thousand,ten_thousand,place;

printf("请输入一个整数（0~99999）：");

scanf("%ld",&num);

if(num>9999)place=5;

elseif(num>999)place=4;

elseif(num>99)place=3;

elseif(num>9)place=2;

elseplace=1;

printf("place=%dn",place);

ten_thousand=num/10000;

thousand=num/1000%10;

hundred=num/100%10;/*求高手具体解析下这个位置,要是num=89830是怎样的解析思路*/

ten=num%100/10;

indiv=num%10;

switch(place)

{case5:printf("%d,%d,%d,%d,%d",ten_thousand,thousand,hundred,ten,indiv);

printf("n反序数字为；");

printf("%d%d%d%d%dn",indiv,ten,hundred,thousand,ten_thousand);

break;

case4:printf("%d,%d,%d,%d",thousand,hundred,ten,indiv);

printf("n反序数字为：");

printf("%d%d%d%dn",indiv,ten,hundred,thousand);

break;

case3:printf("%d,%d,%d",hundred,ten,indiv);

printf("n反序数字为：");

printf("%d%d%dn",indiv,ten,hundred);

break;

case2:printf("%d,%d",ten,indiv);

printf("n反序数字为：");

printf("%d%dn",indiv,ten);

break;

case1:printf("%d",indiv);

printf("n反序数字为：");

printf("%dn",indiv);

break;

}

}