急求高手处理的程序，麻烦你们帮下手看下哪里错,该如何解决

急求高手处理的程序，麻烦你们帮下手看下哪里错
#include<stdio.h>
#include<malloc.h>
#include<string.h>
#include<stdlib.h>
#define LEN sizeof(struct point)
struct point 
{
  int skjbh ;

  int spbh ;

  int xssl ;

  double money ;
  struct point *next ;
} ;


int n,a ;


struct point * creat (void)

{
  struct point *head ;

  struct point *p1 ,* p2;

  n = 0 ;
  
 head = NULL ;

  while ( 4)

  {
  n=n+1 ;

p1=(struct point *)malloc(LEN) ;

printf("enter the four :\n") ;

  scanf("%d",&p1 -> skjbh);

if(p1 -> skjbh==0)break;

  scanf("%d%d%f",&p1->spbh ,&p1->xssl,&p1->money ) ;

if ((p1 ->money ) ==0 ) break ;
  if(n==1) head = p1 ;

else 

p2->next = p1 ;

p2=p1 ;
  
  }

  p2->next =NULL ;

  return (head) ;
}

/*void save(struct point * head)
{struct point * p3;
 FILE * fp;
 p3=head;
 if((fp=fopen("supermarket.txt","w+"))==NULL)
 {printf("cannot open file\n");
  exit(0);
  }
 fputs("收款机编号 商品编号 销售数量 销售金额\n",fp);

 for(a=1;a<n+1;a++)
  {fprintf(fp,"%4d%4d%4d%4.1f\n",p3->skjbh ,p3->spbh ,p3->xssl,p3->money) ;
   
  p3=p3->next;  
  }
 fclose(fp);
 }*/

double GetTotleMoney(int skjbh,struct point *head,int xssl)/*统计每台收款机的销售总额；*/  
{double nTotle = 0;
int i;
struct point *head;
struct point *pTemp;
if(head== NULL || xssl < 1)  
{  
return 0;  
}  
for(i=0;i<xssl;i++)  
 {  
pTemp =head;  
if(pTemp != NULL && pTemp->skjbh == skjbh)  
nTotle+=(pTemp->xssl)*(pTemp->money);}  
return nTotle;
}

void main()

{
struct point * head;
head=creat() ;
save(head);
//GetTotleMoney(head);
}



[解决办法]

C/C++ code

#define  LEN sizeof(struct  point) struct  point {     int  skjbh ;         int  spbh ;         int  xssl ;         double  money ;     struct point *next ; } ; int  n,a ; struct  point * creat (void) {     struct  point *head ;         struct  point *p1 ,* p2;         n = 0 ;         head = NULL ;         while ( 4)             {         n=n+1 ;                 p1=(struct point *)malloc(LEN) ;                 printf("enter the four :\n") ;                 scanf("%d",&p1 -> skjbh);                 if(p1 -> skjbh==0)break;                 scanf("%d%d%f",&p1->spbh ,&p1->xssl,&p1->money ) ;                 if ((p1 ->money ) ==0 )  break ;         if(n==1) head = p1 ;                 else                         p2->next = p1 ;                 p2=p1 ;             }         p2->next =NULL ;         return (head) ; } /*void save(struct point * head) {struct point * p3; FILE * fp; p3=head; if((fp=fopen("supermarket.txt","w+"))==NULL) {printf("cannot open file\n"); exit(0); } fputs("收款机编号    商品编号    销售数量    销售金额\n",fp);   for(a=1;a <n+1;a++)   {fprintf(fp,"%4d%4d%4d%4.1f\n",p3->skjbh ,p3->spbh ,p3->xssl,p3->money) ;       p3=p3->next;      }     fclose(fp); }*/ double GetTotleMoney(int skjbh,struct point *head,int xssl)/*统计每台收款机的销售总额；*/    {    double nTotle = 0;     int i;     //struct point *head;               //这里重定义了    struct point *pTemp;     if(head== NULL || xssl < 1)        {              return 0;        }        for(i=0;i <xssl;i++)      {                    pTemp =head;                    if(pTemp != NULL && pTemp->skjbh == skjbh)                            nTotle+=(pTemp->xssl)*(pTemp->money);}            return nTotle; } void  main() {     struct point * head;     head=creat() ;     save(head);             //GetTotleMoney(head); } 
 
[解决办法]
C/C++ code
double GetTotleMoney(int skjbh,struct point *head,int xssl)/*统计每台收款机的销售总额；*/    {double nTotle = 0; int i; struct point *head; //重定义了head变量，跟GetTotleMoney(int skjbh,struct point *head,int xssl)中的head重名了，这里要换个名字struct point *pTemp; if(head== NULL || xssl < 1)    {      return 0;    }    for(i=0;i <xssl;i++)  {            pTemp =head;            if(pTemp != NULL && pTemp->skjbh == skjbh)                nTotle+=(pTemp->xssl)*(pTemp->money);}        return nTotle; }
[解决办法]
VC10编译通过

C/C++ code
#include  <stdio.h>  
 #include  <malloc.h>  
 #include  <string.h>  
 #include  <stdlib.h>  
  
 #define  LEN sizeof(struct  point)  
 struct  point  
 {  
   int  skjbh ;  
    
   int  spbh ;  
    
   int  xssl ;  
    
   double  money ;  
   struct point *next ;  
 } ;  
  
  
 int  n,a ;  
  
  
 struct  point * creat (void)  
  
 {  
   struct  point *head ;  
    
   struct  point *p1 ,* p2;  
    
   n = 0 ;  
    
   head = NULL ;  
    
   while ( 4)  
      
   {  
     n=n+1 ;  
      
     p1=(struct point *)malloc(LEN) ;  
      
     printf("enter the four :\n") ;  
      
     scanf("%d",&p1 -> skjbh);  
      
     if(p1 -> skjbh==0)break;  
      
     scanf("%d%d%f",&p1->spbh ,&p1->xssl,&p1->money ) ;  
      
     if ((p1 ->money ) ==0 )  break ;  
     if(n==1) head = p1 ;  
      
     else  
        
       p2->next = p1 ;  
      
     p2=p1 ;  
      
   }  
    
   p2->next =NULL ;  
    
   return (head) ;  
 }  
  
 /*void save(struct point * head)  
 {struct point * p3;  
 FILE * fp;  
 p3=head;  
 if((fp=fopen("supermarket.txt","w+"))==NULL)  
 {printf("cannot open file\n");  
 exit(0);  
 }  
 fputs("收款机编号  商品编号  销售数量  销售金额\n",fp);  
  
 for(a=1;a  <n+1;a++)  
 {fprintf(fp,"%4d%4d%4d%4.1f\n",p3->skjbh ,p3->spbh ,p3->xssl,p3->money) ;  
  
   p3=p3->next;   
   }  
   fclose(fp);  
 }*/  
  
 double GetTotleMoney(int skjbh,struct point *head,int xssl)/*统计每台收款机的销售总额；*/   
 { 
   double nTotle = 0;  
   int i;  
   //struct point *head;         //这里重定义了 
   struct point *pTemp;  
   if(head== NULL || xssl  < 1)   
   {     
     return 0;   
   }   
   for(i=0;i  <xssl;i++)   
   {       
     pTemp =head;       
     if(pTemp != NULL && pTemp->skjbh == skjbh)         
       nTotle+=(pTemp->xssl)*(pTemp->money);}     
   return nTotle;  
 }  
  
 void  main()  
  
 {  
   struct point * head;  
   head=creat() ;  
 //  save(head);       
 
   //GetTotleMoney(head);  
 }  
  
 

[解决办法]
#include <stdio.h>  
#include <malloc.h>    //不能打开  
#include <string.h>  
#include <stdlib.h>  

。。。。。
double GetTotleMoney(int skjbh,struct point *head,int xssl)/*统计每台收款机的销售总额；*/   
{  
   struct point *head;               //这里重定义了
   struct point *pTemp;  
   if(head== NULL || xssl < 1)   
   {     
       return 0;   
   }   
。。。。
}