bookstore.c

书店管理系统

/*
#include<stdio.h>
#include<math.h>
#include<string.h>
#include <alloc.h>
*/
/*
//以下变量的定义在头文件中
extern  press_store[3];
extern  final_buyer[2];
*/

//各个书店信息的初始化
void store_beginer()
{
        FILE * fp_c;
        FILE * fp_d;
        FILE * fp_e;

        //打开各个书店文件用于存放采购来的书籍	        
        if ((fp_c=fopen("book_c","wb+"))!=NULL)
        {  
           printf("book_c has been builded!\n");
           fclose(fp_c);
        }
        else 
        { 
           printf("error: book_c has not been builded!\n");
        } 
         
        if ((fp_d=fopen("book_d","wb+"))!=NULL)
        {  
           printf("book_d has been builded!\n");
           fclose(fp_d);
        }
        else 
        { 
           printf("error: book_d has not been builded!\n");
        } 
        
        if ((fp_e=fopen("book_e","wb+"))!=NULL)
        {  
           printf("book_e has been builded!\n");
           fclose(fp_e);
        }
        else 
        { 
           printf("error: book_e has not been builded!\n");
        } 
       
        //各个书店订购书目数量的初始化
        int i_store;
	int i_scri;
	for (i_store=0;i_store<3;i_store++) 
	{
	    for (i_scri=0;i_scri<7;i_scri++)	
	    {
	        press_store[i_store].scrimbe_num[i_scri]=200;
                press_store[i_store].scrimbe_num[i_scri]=200; 
	    
	    }
		
	}
	
	//C 书店订购种类
	press_store[0].kind[0]="science";
	press_store[0].kind[1]="foreign";
	press_store[0].kind[2]="education";
	press_store[0].scrimbe_num[0]=500;
	
        //D书店订购种类
	press_store[1].kind[0]="foreign";
	press_store[1].kind[1]="science";
	press_store[1].kind[2]="society";
	press_store[1].kind[3]="education";
	press_store[1].scrimbe_num[0]=500;
   
        //E 书店订购种类	
	press_store[2].kind[0]="science";
	press_store[2].kind[1]="foreign";
	press_store[2].kind[2]="society";
	press_store[2].kind[3]="health";
	press_store[2].kind[4]="life";
	press_store[2].kind[5]="sports";
	press_store[2].kind[6]="education";

	
}

//书店到出版社采购图书
void store_scrimbe(char store_id,char press_id,int cursor_name,int num)
{
     static int cursor_c=0;
     static int cursor_d=0;
     static int cursor_e=0;
     FILE * fp;
     FILE * work;
  
     struct book *a_book;
     a_book=(struct book *)malloc(sizeof(struct book));
      
     a_book=search_press(cursor_name,store_id,press_id, a_book);
        	
     //将采购到的图书放进书库
     switch (store_id)
     {
           case 'C':
           {
                if ((fp=fopen ("book_c","ab"))!=NULL)
                {   
                    if (a_book!=NULL)
                    {            
                        fwrite(a_book,sizeof(struct book),1,fp);
                        cursor_c++;
                    }
                    else
                    {
                        printf("store didnot scrimber a book!!\n");
                    }
                    fclose(fp);
                }
                else
                {
                   printf("C store cannot open book_c in function store_scrimbe\n");
                   pthread_exit(NULL);
                }
                if ((work=fopen ("work.txt","a+"))!=NULL)
                {
                    fprintf(work,"%c store has scrimbed %s book from %c press!\n",store_id,a_book->kind,press_id);
                    fclose(work);
                }
                break;
           }
           
           case  'D':
           {
                if  ((fp=fopen("book_d","ab"))!=NULL)
                {
                    if (a_book!=NULL)
                    {            
                        fwrite(a_book,sizeof(struct book),1,fp);
                        cursor_d++;
                    }
                    else
                    {
                        printf("store didnot scrimber a book!!\n");
                    }
                    fclose(fp);
                }
                else
                {
                   printf("D store cannot open book_d in function store_scrimbe\n");
                   pthread_exit(NULL);
                }

                if ((work=fopen ("work.txt","a+"))!=NULL)
                {
                    fprintf(work,"%c store has scrimbed %s book from %c press!\n",store_id,a_book->kind,press_id);
                    fclose(work);
                }
                break;
           }	
           
           case  'E':
           {
                if ((fp=fopen ("book_e","ab"))!=NULL)
                {   
                    if (a_book!=NULL)
                    {            
                        fwrite(a_book,sizeof(struct book),1,fp);
                        cursor_e++;
                    }
                    else
                    {
                        printf("store didnot scrimber a book!!\n");
                    }
                    fclose(fp);
                }
                else
                {
                    printf("E store cannot open book_e in function store_scrimbe\n");
                    pthread_exit(NULL);
                }

                if ((work=fopen ("work.txt","a+"))!=NULL)
                {
                    fprintf(work,"%c store has scrimbed %s book from %c press!\n",store_id,a_book->kind,press_id);
                    fclose(work);
                }
                break;
           }
           default :
           {
                printf("error store_id!!\n");
           }
     	
     }
     
     free(a_book);
		
}//end function
	

//C D书店具体的买书行为
void sell_book(void * cd_store_id)
{
     char store_id=*((char *)cd_store_id);
     FILE * fp;
     struct book vector;

     if (store_id=='C')
     {
        if ((fp=fopen("book_c","rb+"))==NULL)
        {
           printf("C store cannot open book_c in function sell_book\n");
           pthread_exit(NULL);
        }
        rewind(fp);
        while (!feof(fp))
        {      
              fread(&vector,sizeof(struct book),1,fp);
         
              if (strcmp(vector.kind,"science")==0)
              {
                 vector.lib_num-=100;  
                 fseek(fp,-sizeof(struct book),1);
                 fwrite(&vector,sizeof(struct book),1,fp); 
                 printf("C store has sold 100 science books!\n");
                 if (vector.lib_num==0)
                 {
                    printf("C store science book has been sold out !!\nsell end !go to scrimbe!sorry!!\n");
                   // store_scrimbe(store_id,vector.press_id,vector.cursor_name,500);
                    
                 }
              }
              else
              {
                 vector.lib_num-=20;
                 fseek(fp,-sizeof(struct book),1);
                 fwrite(&vector,sizeof(struct book),1,fp); 
                 printf("C store has sold 20 %s books!\n",vector.kind);
                 if (vector.lib_num==0)
                 {
                    printf("C store %s book has been sold out !!!sell end sorry!!!\n",vector.kind);
                   // store_scrimbe(store_id,vector.press_id,vector.cursor_name,200);
               
                 }
              }
              if(feof(fp))
              { 
                 rewind(fp);
                 if(vector.lib_num==0)
                 {
                    return;
                 }
               
              }
              sleep(2);
            
        }

     }
     else if (store_id=='D')   
     {
        if ((fp=fopen("book_d","rb+"))==NULL)
        {
           printf("D store cannot open book_d in function sell_book\n");
           pthread_exit(NULL);
        }
        rewind(fp);
        while (!feof(fp))
        {      
              fread(&vector,sizeof(struct book),1,fp);
         
              if (strcmp(vector.kind,"foreign")==0)
              {
                 vector.lib_num-=100;
                 fseek(fp,-sizeof(struct book),1);
                 fwrite(&vector,sizeof(struct book),1,fp); 
                 printf("D store has sold 20 foreign  books!\n");
                 if (vector.lib_num==0)
                 {
                    printf("D store foreign book has been sold out !\n");
                   // store_scrimbe(store_id,vector.press_id,vector.cursor_name,500);
                    
                 }
              }
              else
              {
                 vector.lib_num-=20;
                 fseek(fp,-sizeof(struct book),1);
                 fwrite(&vector,sizeof(struct book),1,fp); 
                 printf("D store has sold 20 %s books!!\n",vector.kind);
                 if (vector.lib_num==0)
                 {
                    printf("D store %s book has been sold out !!!\n",vector.kind);
                   // store_scrimbe(store_id,vector.press_id,vector.cursor_name,200);
                    
                 }
              }
              if(feof(fp))
              { 
                 rewind(fp);
                 if(vector.lib_num==0)
                 {
                    return;
                 }
                
              }
              sleep(2);
                            
         } 
     }
}

//press published a book then tell store goes to scrimbe!
void tell_store_buy(struct book temp,char store_id)
{
     FILE * fp;
     //FILE * work;
  
     switch (store_id)
     {
            case 'C':
            {
                  if((fp=fopen("book_c","ab"))!=NULL)
                  {
                     fwrite(&temp,sizeof(struct book),1,fp);
                     fclose(fp);
                     printf("C store has been told to scrimbe and it got them\n");
                  }
                  else
                  {
                     printf("cannot open book_c in function tell_store_buy\n");
                  }
                  break;
            }
            case 'D':
            {
                  if((fp=fopen("book_d","ab"))!=NULL)
                  {
                     fwrite(&temp,sizeof(struct book),1,fp);
                     fclose(fp);
                     printf("D store has been told to scrimbe and it got them\n");
                  }
                  else
                  {
                     printf("cannot open book_d in function tell_store_buy\n");
                  }
                  break;
            }
            case 'E':
            {
                  if((fp=fopen("book_e","ab"))!=NULL)
                  {
                     fwrite(&temp,sizeof(struct book),1,fp);
                     fclose(fp);
                     printf("E store has been told to scrimbe and it got them\n");
                  }
                  else
                  {
                     printf("cannot open book_e in function tell_store_buy\n");
                  }
                  break;
            }
            default :
            {
                 printf("wrong store_id!!!\n");

            }


     }//end switch
    

}// end function