c++中结构体sort()排序 

//添加函数头
#include <algorithm>
//定义结构体Yoy
typedef struct 
{
 double totalprice;         //总价
 double storage;           //库存
 double averageprice;  //平均价格
}Toy;

Toy toy[1000];
//定义排序法则
bool compare(Toy a,Toy b)
{
 return a.averageprice >b.averageprice ;
} //< 升序    >降序
 
bool compare1(Toy a,Toy b)
{
        if(a.totalprice!=b.totalprice)
        {
              return a.totalprice<b.totalprice;
        }else if(a.storage!=b.storage)
        {
             return a.storage<b.storage;
}
int main()
{
       ......
       sort(toy,toy+N,compare);
       ......
}