Mail list

One 、 Address book menu

void menu()
{
    
	printf("*********************************\n");
	printf("** 1.  Add a Contact  **\n");
	printf("** 2.  Delete Contact  **\n");
	printf("** 3.  Find contacts  **\n");
	printf("** 4.  Modify contact  **\n");
	printf("** 5.  Show all contacts  **\n");
	printf("** 6.  Sort contacts by name  **\n");
	printf("** 0. exit **\n");
	printf("*********************************\n");
}

Two 、 Enumerate Address Book Options

enum Choose
{
    
    EXIT,  //0
    ADD,   //1
    DEL,   //2
    SEARCH,//3
    MODIFY,//4
    SHOW,  //5
    SORT   //6
};

3、 ... and 、 Address book structure content

// Structure ： Information of each member in the address book 
typedef struct PeoInform
{
    
    char name[MAX_NAME];
    int age;
    char sex[MAX_SEX];
    char phone[MAX_PHONE];
    char address[MAX_ADDRESS];
}PeoInform;

// Address book type 
struct Contact
{
    
    struct PeoInform data[MAX];// Deposit 1000 Messages 
    int size;// Record the number of elements in the current structure 
};

Four 、 Address book initialization

// Function to initialize address book 
void InitContact(struct Contact *ps)
{
    
    memset(ps->data, 0, sizeof(ps->data));
    ps->size = 0;// Set up address book initially only 0 Elements 
}

5、 ... and 、 Add contacts

// Add a message to the address book 
void AddContact(struct Contact *ps)
{
    
    if(ps->size == MAX)
    {
    
        printf(" The address book is full , Unable to increase \n");
    }
    else
    {
    
        printf(" Please enter a name :>");
        scanf("%s", ps->data[ps->size].name);
        printf(" Please enter age :>");
        scanf("%d", &(ps->data[ps->size].age));
        printf(" Please enter gender :>");
        scanf("%s", ps->data[ps->size].sex);
        printf(" Please input the phone number :>");
        scanf("%s", ps->data[ps->size].phone);
        printf(" Please enter your home address :>");
        scanf("%s", ps->data[ps->size].address);
 
        ps->size++;
        printf(" Add success \n");
    }
}

6、 ... and 、 Delete Contact

// Delete the specified contact 
void DelContact(struct Contact *ps)
{
    
    char name[MAX_NAME];
    printf(" Please enter the name of the person you want to delete :>");
    scanf("%s", name);
    //1. Find out where the person you want to delete is 
    // Found the subscript of the element where the return name is located 
    // No return found  -1
    int pos = FindByName(ps, name);
    //2. Delete 
    // Unable to query contact 
    if (pos == -1)
    {
    
        printf(" The contact to be deleted cannot be queried , Please try again \n");
    }
    else
    {
    
        // Delete data 
        int j = 0;
        for(j = pos; j < ps->size-1; j++)
        {
    
            ps->data[j] = ps->data[j + 1];
            // Because this data is deleted , So the following data will replace it 
        }
        ps->size--;
        printf(" Delete successful \n");
    }
}

7、 ... and 、 Find contacts

// Find the information of the specified person 
void SearchContact(const struct Contact *ps)
{
    
    char name[MAX_NAME];
    printf(" Please enter the name of the person you want to search for :>");
    scanf("%s", name);
    int pos = FindByName(ps, name);
    if (pos == -1)
    {
    
        printf(" The person you're looking for doesn't exist , Please try again \n");
    }
    else
    {
    
        printf("%-20s\t%-4s\t%-5s\t%-12s\t%-20s\n", " name ", " Age ", " Gender ", " Telephone ", " Address ");
        printf("%-20s\t%-4d\t%-5s\t%-12s\t%-20s\n",
            ps->data[pos].name,
            ps->data[pos].age,
            ps->data[pos].sex,
            ps->data[pos].phone,
            ps->data[pos].address);
    }
}

8、 ... and 、 Modify contact

// Modify the information of the specified contact 
void MoidfyContact(struct Contact *ps)
{
    
    char name[MAX_NAME];
    printf(" Please enter the name of the contact to be modified :>");
    scanf("%s", name);
    int pos = FindByName(ps, name);
    if (pos == -1)
    {
    
        printf(" The information of the contact to be modified does not exist , Please try again \n");
    }
    else
    {
    
        printf(" Please enter a name :>");
        scanf("%s", ps->data[pos].name);
        printf(" Please enter age :>");
        scanf("%d", &(ps->data[pos].age));
        printf(" Please enter gender :>");
        scanf("%s", ps->data[pos].sex);
        printf(" Please input the phone number :>");
        scanf("%s", ps->data[pos].phone);
        printf(" Please enter your home address :>");
        scanf("%s", ps->data[pos].address);
 
        printf(" Modified to complete \n");
    }
}

Nine 、 Print contacts

// Show the contact information in the address book 
void ShowContact(const struct Contact *ps)
{
    
    if(ps->size == 0)
    {
    
        printf(" Address book is empty \n");
    }
    else
    {
    
        int i = 0;
        // title 
        printf("%-20s\t%-4s\t%-5s\t%-12s\t%-20s\n", " name ", " Age ", " Gender ", " Telephone ", " Address ");
        // data 
        for(i = 0; i < ps->size; i++)
        {
    
            printf("%-20s\t%-4d\t%-5s\t%-12s\t%-20s\n",
            ps->data[i].name,
            ps->data[i].age,
            ps->data[i].sex,
            ps->data[i].phone,
            ps->data[i].address);
        }
    }
}

Ten 、 Sort by name

// Sort the contents of the address book by name 
void SortContact(struct Contact *ps)
{
    
    if (ps->size <= 0){
    
		printf(" There are no contacts in the address book , Please add !\n");
	}
	int i = 0;
	int j = 0;
	for (i = 0; i< ps->size - 1; i++)
	{
    
		for (j = 0; j< ps->size - i - 1; j++)
		{
    
			if (strcmp( ps->data[j].name, ( ps->data[j + 1]).name) > 0)
			{
    
                PeoInform tmp;
				tmp = ps->data[j];
				ps->data[j] = ps->data[j + 1];
				ps->data[j + 1] = tmp;
			}
		}
		printf(" Sort success ！\n");
	}
}

11、 ... and 、 Address book main function

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

#define MAX 1000
#define MAX_NAME 20
#define MAX_SEX 5
#define MAX_PHONE 12
#define MAX_ADDRESS 30

int main()
{
    
    int input = 0;
    // Create address book 
    struct Contact con;//con It's the address book , It contains ：1000 The number of elements and size
    // Initialize address book 
    InitContact(&con);
    do
    {
    
        menu();
        printf(" Please select :>");
        scanf("%d", &input);
        switch(input)
        {
    
        case ADD:
            AddContact(&con);
            break;
        case DEL:
            DelContact(&con);
            break;
        case SEARCH:
            SearchContact(&con);
            break;
        case MODIFY:
            MoidfyContact(&con);
            break;
        case SHOW:
            ShowContact(&con);
            break;
        case SORT:
            SortContact(&con);
            break;
        case EXIT:
            printf(" Exit address book \n");
            break;
        default:
            printf(" Wrong choice \n");
            break;
        }
    } while (input);
    return 0;
}