如何加起来输入一个整数

img

![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/39882789646618.jpg "#left"都熟悉的诺德豪斯的呢大家都能对比度快递的呢大家


#include<stdio.h>
#include "math.h"
int main()
{
    int a,b,c,d,e,t;
    scanf("%d",&t);
    t = abs(t);
    d=t%10;
    c=(t%100)/10;
    b=(t/100)%10;
    a=t/1000;
    e=a+b+c+d;
    printf("%d",e);
}

#include <stdio.h>
int main()
{
    int n,sum = 0;
    scanf("%d",&n);
    if(n<0)
      n = -n;
    while(n>0)
    {
        sum += n%10;
        n = n/10;
    }
    printf("%d",sum);
}