绝对值排序（2020）——笔记待完善

#include<stdio.h>
#include<cmath>
int main()
{
    int n;
    char d;
    int r[101];
    while (scanf_s("%d%c", &n, &d) != EOF)
    {
        if (n == 0)
            break;
        for (int i = 1; i <= n; i++)
        {
            int a;
            scanf_s("%d", &a);
            r[i] = a;
        }
        for (int i = 2; i <= n; i++)
        {
            r[0] = r[i];
            int j = i - 1;
            while (abs(r[0]) > abs(r[j]))
            {
                r[j + 1] = r[j];
                j = j - 1;
            }
            r[j + 1] = r[0];
        }
        for (int i = 1; i <= n; i++)
        {
            if (i!=n)
                printf("%d ", r[i]);
            else
                printf("%d\n", r[i]);
            
        }
    }
}