如何检查哪个 1 是最旧的对象或价格?

How to check which 1 is the oldest object or price?

上图中蓝色横线对象是最旧的对象,如何获取?

类似于:

if (blue < yellow) &&  (blue < pink) &&  (blue < red)) { printf ("blue is the oldest object"); }

我需要使用 ibarshift 吗?我可以有代码示例吗?

string oldestObjectName="", name;
datetime oldestObjectDate=INT_MAX, tmpDate;
for(int i=ObjectsTotal()-1;i>=0;i--)
{
   name=ObjectName(i);
   tmpDate=ObjectGetInteger(0,name,OBJPROP_TIME1);
   if(tmpDate<oldestObjectDate)
   {
      oldestObjectDate=tmpDate;
      oldestObjectName=name;
   }
}
printf("oldest object is %s, its time1=%s",oldestObjectName,TimeToString(oldestObjectDate));