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标题:请大家帮忙看一下如下程序为什么出错(指针赋值的逻辑错误,已标出),非常 ...
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请大家帮忙看一下如下程序为什么出错(指针赋值的逻辑错误,已标出),非常期待赐教!
大家好!
   
     最近写了一个关于银行单队多服务台排队系统的程序,有个地方调试时提示有逻辑错误(具体内容已在程序中用红颜色标出),但不知道该怎样改,还望高手指教!东西急着用,所以非常渴望高手的点拨和赐教!感激感激!!     
  
 
#include <stdio.h>
 #include <stdlib.h>
 #include <time.h>
 #include <math.h>
 #define OK 1
 #define TRUE 1
 #define FALSE 0
 typedef int Status;
 
//以下为事件和事件表
typedef struct QCuEvent
{
         float OccurTime;
         int NType;
     int servenum;
         float ArrivalTime;
         float Duration;
         struct QCuEvent *next;
 }QCuEvent, *EventList;
 //以下为窗口前队列元素
 typedef struct QCuElem
{
     float ArrivalTime;
         float Duration;
         struct QCuElem *next;
 }QCuElem,*QEptr;
 //以下为队列指针
 typedef struct {
         QEptr front;
         QEptr rear;
 }QCustomerp,*QCupp;


int CustomerNum=0;//累计客户数
 int ServedCu=0;//系统中已办理业务的顾客数
 float CloseTime;        //关门时间
 int windowsnum = 0;//服务窗口数
 float a=0;//顾客到达的泊松流指标
 float b=0;//顾客服务时间分布的负指数分布指标
 int *S;//指向窗口编号数组的指针
 int SS=0;//窗口服务状态指数的加和
 float *k;//统计窗口服务时间的数组
 float TotalTime=0;//累计客户逗留时间
 float TotalserviceTime=0;//累计客户服务时间
 int l;//系统中的排队长
 float Ls;//系统中的平均顾客数
 float Lq;//平均队长
 float T=0;//时间参数
 
//涉及的主要操作函数
 Status OpenForDay(EventList &ev, QCuEvent en, QCupp &q);
 Status CustomerArrived(EventList &ev, QCupp &q, QCuEvent en);
 Status CustomerDeparture(EventList &ev, QCupp &q, QCuEvent en);
 void CloseForDay();
 
//基本操作函数
 Status InitCuQueue(QCupp q);
 float randomnum(float x);
 Status OrderInser(EventList &ev, QCuEvent en);
 Status EnCuQueue(QCupp q,QEptr Q);
 int QLength(QCupp q);
 Status DelFirstEvent(EventList &ev);
 Status GetQhead(QCupp q,QEptr Q);
 Status DestoryQueue(QCupp q);
 void Print_QStatus(QCupp q);
 void Bank_SimulationFunc();
 void test(char str[]);
 
void main() {
         QCuEvent en={0,0,0,0,0,NULL};
        EventList ev;
         QCupp QCu;
         int j;
         OpenForDay(ev, en, QCu );
         while (ev->next)
         {  
         en.NType = ev->next->NType;
                 en.OccurTime = ev->next->OccurTime;
                 en.servenum=ev->next->servenum;
                 en.ArrivalTime=ev->next->ArrivalTime;
         en.Duration=ev->next->Duration;
                 en.next=NULL;
                 DelFirstEvent(ev);
         if (en.NType == 0)
         {
                 CustomerArrived(ev, QCu, en);
             Ls+=(en.OccurTime-T)*(CustomerNum-ServedCu-1);
         }
         else
         {
                 CustomerDeparture(ev, QCu, en);
         Ls+=(en.OccurTime-T)*(CustomerNum-ServedCu+1);
         }
         Lq+=(en.OccurTime-T)*l;
         Print_QStatus(QCu);//在这里调用计算队长的函数时有误,见如下 Print_QStatus函数以及int QLength(QCupp q)函数中所提示的逻辑错误,但是在CustomerArrived函数中调用时却是可以的,见如下CustomerArrived函数中的红色标注
         printf("Ls为%f\n",Ls);
         printf("Lq为%f\n",Lq);
         for (j=1;j<=windowsnum;j++)
             printf("此时窗口忙闲状态为%d\n",S[j]);
     printf("系统中现有顾客人数为%d\n",CustomerNum-ServedCu);
     T=en.OccurTime;
         }
         free(S);
         free(ev);
         free(QCu);
         CloseForDay();  
 }
 
Status OpenForDay(EventList &ev, QCuEvent en, QCupp &q)
 {        float temp = 0;
     int i=0;
         printf("请输入顾客到达的泊松流指标a:");
         scanf("%f",&a);
         printf("请输入顾客服务时间的负指数分布指标b:");
         scanf("%f",&b);
         printf("请输入营业时间(单位:分钟):");
         scanf("%f",&temp);
         CloseTime=temp;
         en.OccurTime=0;
         en.NType=0;
         en.ArrivalTime=0;
         en.Duration=0;
         en.servenum=0;
         en.next =NULL;
         if((ev=(EventList) malloc(sizeof(QCuEvent)))==NULL)
         {
                 printf("ev内存分配出错!");
         exit(1);
         }
         ev->next = NULL;
         OrderInser(ev,en);
     printf("请输入办理业务的窗口数i(至少1个):");
         scanf("%d", &windowsnum);
 if((S=(int* )malloc((windowsnum+1)*sizeof(int)))==NULL)
     {
                 printf("S内存分配出错!");
         exit(1);
         }
 S[0]=1;
 for(i=1;i<=windowsnum;i++)
 {
 S=0;
 SS+=S;
 }
 if((k=(float* )malloc((windowsnum+1)*sizeof(float)))==NULL)
     {
                 printf("k内存分配出错!");
         exit(1);
         }
 for(i=1;i<=windowsnum;i++)
 {
 k=0;
 }
     if((q=(QCupp ) malloc(sizeof(QCustomerp)))==NULL)
 {
                 printf("q内存分配出错!");
         exit(1);
         }
         InitCuQueue(q);  
         return OK;  }
 
Status CustomerArrived(EventList &ev, QCupp &q, QCuEvent en)
 {
 float intertime;
 float durtime;
 float t;
 int i;
 QCuEvent enTemp;
 QEptr Q;
 test("顾客到达处理<<<<<<<<");
 printf("到达时间%f\n", en.OccurTime);
 CustomerNum ++;
 
intertime =randomnum(a); // 到达时间间隔
 durtime = randomnum(b);  // 服务时间间隔
 t = en.OccurTime + intertime;
             enTemp.OccurTime = t;
             enTemp.NType = 0;
         enTemp.servenum=0;
                 enTemp.ArrivalTime=t;
                 enTemp.Duration=0;
             enTemp.next = NULL;
             if (t < CloseTime)        OrderInser(ev, enTemp);
                 printf("下一个顾客到达时间%f\n",t);
             if(SS<windowsnum)
         {
             enTemp.OccurTime = en.OccurTime + durtime;
         enTemp.NType = 1;
         for(i=0;S;i++)
 enTemp.servenum=i+1;
 enTemp.ArrivalTime=en.OccurTime;
 enTemp.Duration=durtime;
 enTemp.next = NULL;
 
if(enTemp.OccurTime<CloseTime)                                   
 {OrderInser(ev, enTemp);
 S=1;
 SS+=S;
 }
 }
         else
 {    Q=(QEptr) malloc(sizeof(QCuElem));
     if(Q==NULL)
         {
                 printf("内存分配出错!");
         exit(1);
         }
         Q->ArrivalTime = en.OccurTime;
         Q->Duration = durtime;
     Q->next = NULL;
     EnCuQueue(q,Q);
        free(Q);
printf("此时队长为%d.",QLength(q));//在这里调用计算队长的函数时是正常的,没有出现逻辑错误,见如下int QLength(QCupp q)函数
}
 return OK;
 }
 
Status CustomerDeparture(EventList &ev, QCupp &q, QCuEvent en)
 {   QCuEvent enTemp;
     QEptr customer;
         test(">>>>>>>>顾客离开处理");
         printf("离开时间%f\n",en.OccurTime);
     ServedCu++;
     printf("系统中已办理业务的人数为%d\n",ServedCu);
         printf("此时寻找服务的窗口编号为%d\n", en.servenum);
         TotalTime += en.OccurTime - en.ArrivalTime;
         TotalserviceTime+=en.Duration;
     k[en.servenum]+=en.Duration;
 if (QLength(q)>=1)
 {   customer=(QEptr) malloc(sizeof(QCuElem));
     if(customer==NULL)
         {
                 printf("内存分配出错!");
         exit(1);
         }
             GetQhead (q,customer);//获得队列中的首元素
         enTemp.OccurTime = en.OccurTime + customer->Duration;
                 enTemp.NType = 1;
         enTemp.servenum=en.servenum;
                 enTemp.ArrivalTime=customer->ArrivalTime;
                 enTemp.Duration=customer->Duration;
         enTemp.next=NULL;
             if(enTemp.OccurTime>CloseTime)
             {  DestoryQueue(q);
             S[en.servenum]=0;
             }
         else
         {OrderInser(ev, enTemp);}
         free(customer);
         }
 else
 {
         S[en.servenum]=0;
     SS=SS-1;
 }
 return OK;  }
 
void CloseForDay()
 {  
         int i;
     printf("***************************************\n");
         printf("*\n");
         printf("*  系统中的所有顾客数为:%d\n", CustomerNum);
     printf("*  系统中已办理业务的顾客数为:%d\n", ServedCu);
         printf("*  所有顾客在系统中逗留的总时间:%f分钟\n", TotalTime);
         printf("*  平均每人在系统中的逗留时间:%f\n",(float)TotalTime/(float)CustomerNum);
     printf("*  所有顾客业务办理的总时间:%f分钟\n", TotalserviceTime);
         printf("*  平均服务时间:%f\n",(float)TotalserviceTime/(float)CustomerNum);
         float m=(float)TotalTime/(float)CustomerNum;
         float n=(float)TotalserviceTime/(float)CustomerNum;
         printf("*  平均等待时间:%f\n",(m-n));
         printf("*  系统中的平均顾客数为:%f\n",(float)Ls/(float)TotalTime);
     printf("*  平均排队长为:%f\n", (float)Lq/(float)TotalTime);
         for(i=1;i<=windowsnum;i++)
             printf("第%d个窗口的繁忙概率为:%f\n",i,(float)k/(float)TotalTime);
            printf("*\n");
         printf("***************************************\n");        
}
 

float randomnum(float x)//随机数生成函数
 {
         float z,y;
         srand((float)time(NULL));
         y=1/x;
         z=rand()%1001*0.001;
         if((z!=0)&&(z!=1))
                 return(-y*log(z));
         return OK;
 }

Status OrderInser(EventList &ev, QCuEvent en)//单链表事件插入
 {
         EventList  entemp,qtemp ;
         entemp=(EventList) malloc(sizeof(QCuEvent));
         if(entemp==NULL)
         {
                 printf("内存分配出错!");
         exit(1);
         }
         entemp->OccurTime=en.OccurTime;
         entemp->NType=en.NType;
     entemp->servenum=en.servenum;
         entemp->ArrivalTime=en.ArrivalTime;
         entemp->Duration=en.Duration;
         entemp->next=NULL;
         if (!ev->next)
         {
                 ev->next=entemp;
                 return OK;
         }
         {
             qtemp=ev;
             while(qtemp->next&&qtemp->next->OccurTime < en.OccurTime)
             {
                     qtemp=qtemp->next;
             }
             entemp->next=qtemp->next;
             qtemp->next=entemp;
                 return OK;
         }
         return OK;
 }

Status InitCuQueue(QCupp q)//初始化队列
 {
         q->front = (QEptr) malloc(sizeof(QCuElem));
         if(q->front==NULL)
         {
                 printf("内存分配出错!");
         exit(1);
         }
         q->front->next = NULL;
         q->rear = q->front;
         return OK;
 }
 
Status EnCuQueue(QCupp q,QEptr Q)//把元素插入队列函数
 {
 q->rear->next = Q;
         q->rear = Q;
         return OK;
 }
 
int QLength(QCupp q)//求队长
{        
    QEptr  qtemp;//队列元素指针,指向的元素和到达时间、服务时间和自身结构指针
    int i=0;
     qtemp = q->front->next;
     while(qtemp)
     {
     qtemp = qtemp->next;//调试时在主函数中调用此函数时提示此处有逻辑错误,为:表达式不能被计算(即Expression cannot be evaluated)
      i++;
      }
      return i;
 }
 
Status DelFirstEvent(EventList &ev)//删除事件表中的第一个结点
 {
         EventList p;
         p = ev->next;
         ev->next = p->next;
         return OK;
 }
 
Status GetQhead(QCupp q, QEptr Q)//获得队头元素
 {
 Q->ArrivalTime = q->front->next->ArrivalTime;
 Q->Duration = q->front->next->Duration;
 Q->next=NULL;
         return OK;
 }
 Status DestoryQueue(QCupp q)//摧毁队列并释放
 {        QEptr  p;//队列元素指针
        while(q->front->next)
         {
         p = q->front->next;
         q->front->next = p->next;
         }
         q->front->next =NULL;
         q->rear = q->front;
         return OK;
 }
 
void Print_QStatus(QCupp q)//输出队长
 {
       l = QLength(q);
       printf("队长为:%d", l);
       printf("\n");
 }
 
void test(char str[])
 {  printf("--%s--\n",str);
 }
 
搜索更多相关主题的帖子: 东西 渴望 include 服务台 
2012-05-07 00:45
ln6265431
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我很想看懂……
2012-05-07 15:15
快速回复:请大家帮忙看一下如下程序为什么出错(指针赋值的逻辑错误,已标出), ...
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