為什么我的score[2]被吃了？

#include <stdio.h>
int main()
{
??? int score[10]={67,98,75,63,82,79,81,91,66,84};
??? int sum,average,N;
??? sum = 0;
??? for(N=0;N<10;N++)
??? {
??????? sum += score[N];
??? }
??????? printf("總分是%d\n",sum);
??? for(N=0;N<10;N++)
??????? {
??????????? if(score[N]<score[N+1])
??????????????? {
??????????????????? int temp;
??????????????????? temp=score[N+1];
??????????????????? score[N+1]=score[N];
??????????????????? score[N]=temp;??????????????????
?????printf("score[%d]=%d\n",N,score[N]);
??????????????? }
??????? }
??????? printf("最高分是%d\n",score[0]);
??????? printf("最低分是%d\n",score[9]);
??????? average=sum/10;
??????? printf("平均分是%d\n",average);
???????
??????? return 0;
}