#include <stdio.h>
int main()
{
int arr[]={1,2,3,4,5,6,7,8,9,10};
int k = 7;//k可以随意设定数组中的元素
sz = sizeof(arr)/sizeof(arr[0]);
int left = 0;
int right = sz-1;
while(left <= right)
{
int mid = (left+right)/2;
if(mid(arr[mid])>k)
{
right = mid-1;
}
else if(arr[mid]<k)
{
left = mid+1;
}
else
{
printf("找到了，下标元素为：%d\n",mid);
break;
}
}
if(left>right)
{
printf("没找到\n");
}
return 0;
}
