输入十个数，不仅要输出排序后的十个数，还要输出这是个数原来的位置
帮忙看一下哪里错了？谢谢啦
#include<stdio.h>
int main()
{
    int a[100],b[100],i,j,t,n,k;
    for(i=0;i<10;i++)
    {
        scanf("%d",&a[i]);
        b[i]=i+1;
    }
    for(j=0;j<9;j++)
    {
        for(i=0;i<9-j;i++)
        {
            if(a[i]>a[i+1])
            {
                t=a[i];
                a[i]=a[i+1];
                a[i+1]=t;
                k=b[i];
                b[i]=b[i+1];
                b[i+1]=k;
            }
        }
    }
    for(i=0;i<n;i++)
    {
        if(i==0)
        printf("%d",a[i]);
        else
        printf(" %d",a[i]);
    }
    printf("\n");
    for(i=0;i<n;i++)
    {
        if(i==0)
        printf("%d",b[i]);
        else
        printf(" %d",b[i]);
    }
    printf("\n");
    return 0;
}