customergroup.cpp

产生一个随机数

#include"random.h"
#include"customerGroup.h"
random ran;//随机数类ran
customerGroup::customerGroup():groupsize(ran.between(1,5))
{
}//随机产生一个固定大小的顾客群
int customerGroup::orderSize()//购多少份
{
   int scoops=0;
   for(int i=0;i<groupsize;i++)
   {
	   ran.refresh();
        scoops+=(ran.between(1,3));//假定顾客群每个顾客点1到3份
   }
   return scoops;
}