输出数组中的数

#每日美图分享#

#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
int main()
{
int num = 0;
printf("please input:");
scanf("%d", &num);//想从数组中输出的数值
int arr[] = { 1,2,3,4,5,6,7,8,9,10};
int sz = sizeof(arr) / sizeof(arr[0]);
int left = 0;//最左下标
int right = sz-1;//最右下标

while (left <= right)
  {
int mid = (left + right) / 2;
if (arr[mid] < num)
    {
left = mid + 1;
    }
else if (arr[mid] > num)
    {
right = mid - 1;
    }
else
    {
printf("找着了，下标为：%d\n", mid);
break;
    }
if (left > right)
printf("找不着了");
  }
return 0;
}

今天先水一期，学了一天累????了。

先这样了哦，各位拜拜啦！