错哪了呢？为什么输出结果是一个垃圾值呢

哪里错了呢？为什么输出结果是一个垃圾值呢？

C/C++ code

#include <stdio.h>int main(void){    int a[11] = {1,4,6,9,12,15,18,20,23,26};    int temp1,temp2,number,i,j,end;    end = a[9];    for(i = 0; i < 10; i++)    {        printf("%5d",a[i]);    }    printf("\n");    printf("请输入一个整数:\n");    scanf("%d",&number);    if(number > end)    {        a[10] = number;    }    else for(i = 0; i < 10; i++)    {        if(number < a[i])        {            temp1 = a[i];            a[i] = number;        }        break;    }    for(j = i + 1; j < 11; j++ )    {        temp2 = a[j];                                                      a[j] = temp1;        temp1 = temp2;    }    for(i = 0; i < 11; i++)    {        printf("%5d",a[i]);    }    return 0;}