编辑代码

#include <stdio.h>
#define M 10
void main () 
{
  static int a[M]={-12,0,6,16,23,56,80,100,110,115};
  int n,low,mid,high,found;
  low=0;
  high=M-1;
  found=0;
  printf("input:\n");
  scanf("%d",&n);
  while(low<=high)
  {
      mid=(low+high)/2;
      if(n==a[mid]);
      {
          found=1;
          break;
      }
         else if(n>a[mid])
         {
             low=mid+1;
         }
         else high=mid-1;
  }
       if(found==1)
       printf("n=%d,mid=%d",n,mid);
       else printf("%d",n);
}