知识点:if(a[i]>a[i+1])
{
t=a[i];
a[i]=a[i+1];
a[i+1]=t;
int i, x, tmp;
while(1){
for(i = 1; i <= 10; ++i)
scanf("%d", arr+i);
scanf("%d", &x);
tmp = search(arr, N, x);
if(tmp > 0)
printf("%d\n", tmp - 1);
else
printf("Not found\n");