#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
#include<string.h>
#include<math.h>
int main()
{
int arr[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
int k = 7; //输入需要查找的值
int sz = sizeof(arr) / sizeof(arr[0]);
int left = 0;
int right = sz - 1;
while (left<=right)
{
int mid = (right + left) / 2;
if (arr[mid] > k)
{
right = mid - 1;
}
else if (arr[mid] < k)
{
left = mid + 1;
}
else
{
printf("找到了下表为：%d\n", mid);
break;
}
}
if (left>right)
{
printf("找不到\n");
}
return 0;
}
