upper_bound()与lower_bound()使用方法

# include <iostream>
# include <algorithm> //必须包含的头文件
using namespace std;
int main(){
  int point[10]() = {1,3,7,7,9};
  int tmp = upper_bound(point, point + 5, 7) - point; //按从小到大，7最多能插入数组point的哪个位置 
  printf("%dn",tmp);
  tmp = lower_bound(point, point + 5, 7) - point; //按从小到大，7最少能插入数组point的哪个位置
  printf("%dn",tmp);
  return 0;
}