#include<stdio.h>
int find(int x[],int t)
{
int left=0,mid,right=14;
while(left<=right)
{
mid=(left+right)/2;
if(t==x[mid]){return mid;}
else
{
if(t>[mid]){left=mid+1;}
else{right=mid-1;}
}
}
return -1;
}
main()
{
int a[15]={3,7,12,19,21,24,26,33,39,41,45,50,52,64,68};
printf("%d\n",find(a,52))；
}
#include<stdio.h>
int find(int x[],int t)
{
int left=0,mid,right=14;
while(left<=right)
{
mid=(left+right)/2;
if(t==x[mid]){return mid;}
else
{
if(t>x[mid]){left=mid+1;}
else{right=mid-1;}
}
}
return -1;
}
main()
{
int a[15]={3,7,12,19,21,24,26,33,39,41,45,50,52,64,68};
printf("%d\n",find(a,52));
}
