基于Linux C 单链表的通讯录程序

#include <stdio.h>
#include <stdlib.h>
#include<string.h>
#include <ctype.h>


#define MAX_NAME 100
#define MAX_TEL 11
#define OK 1
#define ERROR 0


typedef char Elementtype;
typedef char Status;


typedef struct node
{
    Elementtype name[MAX_NAME];
    Elementtype tel[MAX_TEL] ;
    struct node * next;
}Node;


Status init (Node **head);


Status inserthead(Node *head);
Status deletename(Node *head);
void queryname(Node*head);
void printflist(Node*head);
Status updatetel(Node*head);
Status updatename(Node*head);
Status changelist(Node*head);
int  length(Node*head);
void create_txt(Node*head);
Status wipedata(Node*head);


int main(int argc, char ** argv)
{
Node * head ;
init(&head );


int  ret ;
int num;
    int i;
    ret = init (&head);

    if(ret == ERROR)
{
        return -1;
}

system("clear");

for(;;)
    {
   switch(menu_select())
   {
            case 1:
            {   
    inserthead(head);
    break;
   }
   case 2:
   { 
        printflist(head);
    break;
   }
   case 3:
   {   
deletename(head);
break;
   }
   case 4:
   {   
   updatetel(head);
   break;
   }
   case 5:
   {  
   updatename(head);
break;

   }
case 6:
   { 
   queryname(head);
break;
}
case 7:
{
create_txt(head);
break;
}
   case 8: 
   {
       exit(0);
   }

   } 
}

    return 0; 
}


menu_select()
{  
    int c;
char str[30];
printf("----- Welcome to the address book system ------\n");
printf("|--------------1. inserthead------------------|\n");
printf("|--------------2. list------------------------|\n");
printf("|--------------3. deletename------------------|\n");
printf("|--------------4. updatetel-------------------|\n");
printf("|--------------5. updatename----------------- |\n");
printf("|--------------6. queryname-------------------|\n");
printf("|--------------7. create_tel.txt--------------|\n");
printf("|--------------8. quit------------------------|\n");
    printf("|---------------------------------------------|\n");

do
{
   printf("please input num  1 ~ 8 :\n");
        scanf ("%s",&str);
   c = atoi(str);
}while(c < 0 || c > 8);

return c;

}




Status init (Node **head)
{
Node *new = (Node*) malloc(sizeof(Node));

if(NULL == new)
{
return ERROR;
}

*head = new;
new -> next = NULL;

return OK;

}
Status inserthead(Node *head)
{
char name[10];
char tel[15];
Node*new = (Node*)malloc (sizeof(Node));
if(new == NULL)
{
return ERROR;
}

    strcpy(new -> name ,name);
strcpy(new -> tel ,tel);

if(head -> next == NULL)
{
head -> next = new;
new -> next = NULL;
}
else
{
new -> next = head -> next;
head -> next = new;

}


        printf("you can enter name and tel .\n");
        int n;
 //  scanf("%d",&n);
int i;


        printf("please input name :\n");
   scanf("%s",head ->next-> name);
   
   printf("please input tel :\n");
scanf("%s",head ->next -> tel);

    return OK ;
}
Status deletename(Node *head)
{
    char name_1[10] ;

printf("please input the name you want to remove !\n");
scanf("%s",&name_1);

Node *new = (Node*)malloc(sizeof(Node));
Node* temp;
if(new == NULL)
{
         return ERROR;
}

while(head -> next != NULL )
{
        int a = strcmp(head -> next -> name,name_1);

   if (a == 0)
{
            temp = head -> next ;
head -> next = head -> next -> next;
free (temp);
temp = NULL;
   }
else
{
   head = head -> next ;
}
}
return OK;
}






void printflist(Node*head)
{
printf("----- Welcome to the address book system ----\n");
printf("---------------------------------------------\n");
while(head -> next != NULL)
{    
    
        printf("name :%s                     tel :%s           \n",head ->next -> name,head ->next -> tel );
        head = head -> next;
}

printf("---------------------------------------------\n");
}


void create_txt(Node*head)
{
FILE *file = fopen ("tel.txt","w+");
if(NULL == file)
{
perror(" open file error.");
        exit(1);
}
while (head -> next != NULL)
{
    fprintf(file,"%s\t%s\n",head -> next -> name ,head ->next -> tel);
 
    head = head -> next ;
}
fclose(file);
printf("--------------------------\n");
printf("create_tel.txt successful.\n");
printf("--------------------------\n");
}


/*
void scanf_txt(Node*head)
{
FILE *file = fopen ("tel.txt","w+");
if(NULL == file)
{
perror(" open file.");
        exit(1);
}
fread(stdout,sizeof(char),100,file);


}
*/




 void queryname(Node*head)
{   
    char name_1[20];

    printf("please input name you want to query !\n");
scanf("%s",&name_1);

    int flag = 0;
int index = 1;

while (head -> next != NULL)
{
int a = strcmp(head -> next -> name ,name_1);
if(a == 0)
{   printf("------------------------------------------------\n");
       printf(" name  =  %s    ----    index  =  %d\n",name_1, index);

printf("------------------------------------------------\n");
            flag ++;
}

index++;
head = head -> next;
}
if(flag == 0)
{  
        printf("----------------------------------------------------\n");
printf(" No name here , you can input agian !\n" );
printf("----------------------------------------------------\n");
}


}


Status updatetel(Node *head)
{
    char te1_1[15];
char tel_2[15];

printf("Please input  your original number. \n");
scanf("%s", &te1_1);

int i;
  
    //for(i = 0;i < length(head);i++)
    while(head -> next != NULL) 
    {
        if( strcmp(te1_1, head -> next -> tel) == 0 )
        {
         

            printf("please input the tel you want to change .\n");
scanf("%s",&tel_2);
            strcpy(head -> next-> tel ,tel_2);
          //  scanf("%s", head -> next -> tel);
        }
            head = head -> next;
     }


    return OK; 
 

}


Status updatename(Node*head)
{


char name1[10];
char name2[10];

printf("Please input  your original name. \n");
scanf("%s", &name1);
// printf("%s\n", name1);


    
   int i;
  
    //for(i = 0;i < length(head);i++)
while(head -> next != NULL)       
    {
        if( strcmp(name1, head -> next -> name) == 0)
        {
         

            printf("please input the name you want to change !\n");  
            scanf("%s", &name2);
strcpy(head -> next -> name, name2);
        }
            head = head -> next;
    }  



    return OK;  

}
int  length(Node*head)
{   
    int len = 0;
while(head -> next != NULL)
{

head = head -> next;
len++;
}

return len ;
}
 /*
Status wipedata(Node *head)
{
Node *temp_1 ;


    while(head)
{
        temp_1 = head -> next;
free(head);
temp_1 = head;


}


    return  OK;
}  */




/*
Status changelist(Node*head)
{
    Node *temp;
char flag_1[100];
    char flag_2[100];

    while(head -> next != NULL)
    {
        temp = head -> next;
        while(temp -> next != NULL)
   {
            if( strcmp(head-> next -> name , temp -> next -> name) == 1)
       {
                strcpy(flag_1 , head -> next -> name);
       strcpy(head -> next -> name , temp -> next -> name);
       strcpy(temp -> next -> name , flag_1);

strcpy(flag_2 , head -> next -> tel);
       strcpy(head -> next -> tel , temp -> next -> tel);
       strcpy(temp -> next -> tel , flag_2);

       }

            temp = temp -> next;
        }
        head = head -> next;
    }
free(temp);
temp = NULL;
}
*/