#include<stdio.h>
#define MAX 10
#define MIN 0
#define N '\n'
#define D 5
int main (void)
{
    int unm[5];
    int i,j,t;
    printf("请输入五个数:");
    printf("%c",N);
    for(i=0;i<D;i++)
    {
        printf("请输入%d数:",i+1);
        scanf("%d",&unm[i]);
        while(unm[i]>MAX||!unm[i]<MIN)
        {
            printf("输入有误,请从新输入:");
            scanf("%d",&unm[i]);
        }
    }
    printf("输入的5位数是:");
    for(i=0;i<D;i++)
        printf("%d  ",unm[i]);
    putchar(N);
    for(i=0;i<D;i++)
        for(j=0;j<D;j++)
        {
            if(unm[i]<unm[j])
                t=unm[j],unm[j]=unm[i],unm[i]=t;
        }
    printf("输入的5位数排序后是:");
    for(i=0;i<D;i++)
        printf("%d  ",unm[i]);
    printf("%c",N);
}

        scanf("%d",&unm[i]);
        while(unm[i]>MAX||unm[i]<MIN)
        {
            printf("输入有误,请从新输入:");
            scanf("%d",&unm[i]);
        }

程序输入字母就出错？字母解决这个问题？

       printf("请输入%d数:",i+1);
     
      while(scanf("%d",&unm[i]) !=1)
      {
          fflush(stdin);
          printf("输入非数字,请重新输入:");
      }
         
        while(unm[i]>MAX||!unm[i]<MIN)

或   while(scanf("%d",&unm[i]) ==EOF)//去看一下scanf的返回值