Question

编写一个C语言程序实现判断任意输入的一个整数是几位数，并求每位的和。

Answer 1

#include <stdlib.h>
#include <stdio.h>
int main(void)
{
int n,sum=0,count=0,s;
printf("输入一个整数:");
scanf("%d",&n);
while(n)
{
s=n%10;
n=n/10;
sum+=s;
count++;
}
printf("整数的个数为：%d\n个位数的和为:%d\n",count,sum);

system("pause");
return 0;
}

Answer 2

#include <stdio.h>

int main()
{
int a,sum=0,count=0;

printf("input interge:");
scanf("%d",&a);

while(a)
{
count++;
sum+=a%10;
printf("%3d",a%10);

a/=10;
}

printf(" is %d位数,sum=%d\n",count,sum);

return 0;
}