address-list.c

java程序开发实例

/*----------------------------------------------------------------------------
 *-----2003-级计算机科学与技术系(department of computer)--杨越(yang-yue)------
 *
 *-----------------通讯录程序（the program is address list)-------------------
 *
 *----------------编于：2006-3-18 11：00（made in 2006-3-18)------------------ 
 ----------------------------------------------------------------------------*/

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>

#define NUM 10
#define NAME 20
#define SEX 5
#define FILE_NAME yyang
#define TEMP_LEN 20

/*
 *定义通讯录的“节点 ”的结构体:
 *num  :   编号  (char array)
 *name :   姓名  (char array)
 *sex  :   性别  (char array) 
 *score:   成绩  (float)
 *
*/

typedef struct address_list
{
    char num[NUM];
    char name[NAME];
    char sex[SEX];
    float score;
    struct address_list *next;
    
}My_friend,*PTR_My_friend;

#define LEN sizeof(My_friend)



 /*-----------------------------------------------------------------------------
  *数出一条记录 ：void print_one(PTR_My_friend head)
  *
  ----------------------------------------------------------------------------*/ 
void print_one(PTR_My_friend head)
{
    printf("the fun is print_one()\n");     
    printf("  num  is:%s\n", head->num); 
    printf("  sex  is:%s\n", head->sex);
    printf("  name  is:%s\n", head->name);
    printf("  score  is:%f\n", head->score);
    printf("----------------------------------------------------------\n");
    
} 


 /*-----------------------------------------------------------------------------
  *自己改造的输入字符串的函数 void input_str( char * string , int size )
  *功能类似于 库函数 gets(*address) 
  ----------------------------------------------------------------------------*/
void input_str( char * string , int len )
{
    /*想用getchar() 和 for()改写*/ 
    int i;
    for ( i=0 ; i < len ; i++ )
    {
	    string[i]=getchar();
	    
    	if(string[i]=='\n')
    	{
    	    string[i] = '\0' ;
    	    break;
    	}

    }

}


 /*-----------------------------------------------------------------------------
  *录入数据   void input_data(PTR_My_friend temp)
  *
  ----------------------------------------------------------------------------*/ 
 void input_data(PTR_My_friend temp)
 {
        PTR_My_friend front=temp; 
        
        printf("(the type is char array %d)",NUM);
        printf("input the num:-->");
        input_str(front->num,NUM);
        printf("%s", front->num);
        printf("\n");
        
        printf("(the type is char array %d)",NAME);
        printf("input the name:-->");
        input_str(front->name,NAME);
        printf("%s", front->name);
        printf("\n");
        
        printf("the type is char array %d)",SEX);
        printf("input the sex:-->");
        input_str(front->sex,SEX);
        printf("%s", front->sex);
        printf("\n");
        
        printf("(the type is float)");
        printf("input the score:-->");
        scanf("%f",&front->score);
        getchar();
        printf("%f", front->score);        
        printf("\n"); 
 }  
 
     
 /*-----------------------------------------------------------------------------
  *插入记录  int inset() 提示这次你要插入的记录的条数 并写入文件 
  *可以把插入的链返回给调用函数
  ----------------------------------------------------------------------------*/
int inset()
{
    /*PTR_My_friend temp ;
    
    temp=head; PTR_My_friend head*/
    printf("the fun is inset()\n");
    
    PTR_My_friend head,front,back;
    int i,n;
    FILE *fp ;
    
    if((fp=fopen("FILE_NAME","a+"))==NULL)
    {
        printf("open the file FILE_NAME failed !!");
        exit(0);
    }
        
   /* it's have the head node*/
    head=(PTR_My_friend)malloc(LEN);
    
    head->next=NULL;
    
    back=head;
    
    printf("input the count of your need create the list:\n-->"); 
    scanf("%d",&n);
    getchar();
          
    for( i=0; i<n; i++ )
    {
        front=(PTR_My_friend)malloc(LEN);
        
        input_data(front); 
        
        if(fwrite(front,LEN,1,fp)!=1)
        {
            printf("the %d th info write to the file \" FILE_NAME \" failed",i+1);
            exit(0);
        }    
        
        back->next=front;       
        back=front;
    }    
    
    back->next=NULL;
    head=head->next;
    fclose(fp);
    return 1; 
   
}


 /*-----------------------------------------------------------------------------
  *删除记录int del (  )
  *删除记录 可批量删除 做成相数据库一样
  ----------------------------------------------------------------------------*/
int del (  )
{
    printf("the fun is del()\n"); 
    return 1; 
}


 /*-----------------------------------------------------------------------------
  *数据拷贝函数 ：void copy_data(PTR_My_friend data1, PTR_My_friend data1) 
  *
  ----------------------------------------------------------------------------*/
 void data_copy(PTR_My_friend data1, PTR_My_friend data2)
 {
     printf("the function is data_copy()\n");
     strcpy(data1->num,data2->num); 
     strcpy(data1->name,data2->name); 
     strcpy(data1->sex,data2->sex);
     data1->score=data1->score; 
 }     
  
  
 /*-----------------------------------------------------------------------------
  *查找函数 PTR_My_friend search( PTR_My_friend head ,char *key)
  *查找记录 按姓名 编号 成绩 等 做成相数据库一样
  ----------------------------------------------------------------------------*/     
PTR_My_friend search( PTR_My_friend head ,char *key)
{
    PTR_My_friend temp=head ;
    PTR_My_friend node=NULL,front=NULL,back=NULL;
    
    node=(PTR_My_friend)malloc(LEN);
    
    front=node;
    back=front;
    
    printf("the fun is search()\n");
    while(temp->next!=NULL)
    {
        if( strcmp(temp->num,key)==0 )
        {
            print_one(temp);

            back=(PTR_My_friend)malloc(LEN);
            
            data_copy(back,temp);
             
            front->next=back;
            front=back;
        }          
        temp=temp->next;
    }    
    front->next=NULL;
    return node->next;
}  

    
 /*-----------------------------------------------------------------------------
  *更新记录 int updata(  )
  *更新记录 按姓名 编号 成绩 等 做成相数据库一样
  ----------------------------------------------------------------------------*/ 
int updata(  )
{
    printf("the fun is updata()\n");
    return 1;
}     


 /*-----------------------------------------------------------------------------
  *load_file()将文件读入内存
  *
  ----------------------------------------------------------------------------*/
PTR_My_friend   load_file()
{
    PTR_My_friend head,front,back;
    FILE *fp_load;
    
    if((fp_load=fopen("FILE_NAME","rb"))==NULL)
    {
        printf("open the file FILE_NAME failed !!");
        exit(0);
    }
        
   /* it's have the head node*/
    head=(PTR_My_friend)malloc(LEN);
    
    head->next=NULL;
    
    back=head;
          
    while( !feof( fp_load ) )
    {
        front=(PTR_My_friend)malloc(LEN);
        
        if(fread(front , LEN ,1,fp_load)!=0) 
        {
            if(feof(fp_load))
            {
                fclose(fp_load);
                printf("\n at the file end!\n");  
                return 0;
            }     
        }
        back->next=front;       
        back=front;
    }    
    
    back->next=NULL;
    head=head->next;
    fclose(fp_load);
    return head; 
}   



 /*-----------------------------------------------------------------------------
  *显示函数 ：void show(PTR_My_friend head)
  *
  ----------------------------------------------------------------------------*/
void show(PTR_My_friend head)
{
    PTR_My_friend temp=head;
    int count=1;
    printf("the function is show()\n");
    while (temp!=NULL)
    {
        printf("the %d th info:-->\n",count);
        printf("  num  is:%s\n", temp->num); 
        printf("  sex  is:%s\n", temp->sex);
        printf("  name  is:%s\n", temp->name);
        printf("  score  is:%f\n", temp->score);
        printf("----------------------------------------------------------\n");
                             
        temp=temp->next;
        count++;
    }
}   

 
 /*-----------------------------------------------------------------------------
  *主函数开始
  *
  ----------------------------------------------------------------------------*/      
int main()
{
    PTR_My_friend head ,temp;
    char menu;
    
/*
 *下面是建立文件并授权为 可读 ，可写 的
*/    
    if(fopen("FILE_NAME","a+")==NULL)
    {
    	printf("\nopen file error!!\n");
    }
    else
    {
    	chmod("./FILE_NAME",S_IRUSR|S_IWUSR);
    }
/*
 * 画出选项菜点 (print the "menu")
 * i : 为插入 inset();   f: 为查找  search(); 
 * d : 为删除 del();     u: 更新记录  updata(); 
 *
*/
    printf("please enter an char :\n");
    printf("\nMY-Address-list-->"); 
    
    do
    {   
         menu=getchar();         
         getchar(); 
         
         switch( menu )
         {
          
            case 'l':      
            case 'L': temp=load_file();  
                      show(temp);
                      printf("\nMY-Address-list-->"); 
                      break; 
            case 'i':      
            case 'I': inset(   );  
                      printf("\nMY-Address-list-->");  
                      break;              
            
            case 'd': 
            case 'D': del(   );
                      printf("\nMY-Address-list-->"); 
                      break;
            
            case 'f':
            case 'F': {   
                          char temp[TEMP_LEN];
                          printf("please enter the NUM witch you want to find!\n"); 
                          input_str(temp,TEMP_LEN);
                                                    
                          head=load_file();
                           
                          show (search(head,temp));
                          printf("\nMY-Address-list-->");
                          break;
                      }    
            
            case 'u':
            case 'U': updata(  );
                      printf("\nMY-Address-list-->");
                      break;  
            case 'q':
            case 'Q': 
					  printf("you sure quit ?!!\n ");
					  printf("press the key 'N/n' is not to quit! \n");
					  printf("press the key 'Y/n' is sure to quit! \n");
					  {/*复合语句完成判断*/
					        char flag;
    					    flag=getchar();
    						getchar();
    						if (flag=='n'||flag=='N')
    						{
    						    printf("\nMY-Address-list-->");
    							break ;
    						}
    						else if(flag=='y'||flag=='Y')
    						{
    							exit(11);
    						}
				       }				
					
                      
			default:
    				 printf("you enter an error key!! !\n");
    				 printf("\nMY-Address-list-->");
    				 break;
         }    
    }
    while( menu!='i'||menu!='d'||menu!='f'||menu!='u'||menu!='l'||menu!='q'||
           menu!='I'||menu!='D'||menu!='F'||menu!='U'||menu!='L'||menu!='Q');
      
    system("pause");
    return 1;
}  
/*--------------------------------主函数结束----------------------------------*/


/*----------------------------create_list建立链表-----------------------------
PTR_My_friend   create_list()
{
    PTR_My_friend head,front,back;
    int i,n;
    FILE *fp ;
    
    if((fp=fopen("FILE_NAME","wb"))==NULL)
    {
        printf("open the file FILE_NAME failed !!");
        exit(0);
    }
        
     it's have the head node
    head=(PTR_My_friend)malloc(LEN);
    
    head->next=NULL;
    
    back=head;
    
    printf("input the count of your need create the list:\n-->"); 
    scanf("%d",&n);
    getchar();
          
    for( i=0; i<=n; i++ )
    {
        front=(PTR_My_friend)malloc(LEN);
        
        input_data(front);
        
        if(fwrite(front,LEN,1,fp)!=1)
        {
            printf("the %d th info write to the file \" FILE_NAME \" failed",i+1);
            exit(0);
        }    
        
        back->next=front;       
        back=front;
    }    
    
    back->next=NULL;
    head=head->next;
    fclose(fp);
    return head; 
}   */