通信錄的實現

text.c

#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include "contact.h"

void menu(){
    printf("==================================\n");
    printf("==  1.add增長       2.del刪除   ==\n");
    printf("==  3.search查找    4.modify修改==\n");
    printf("==  5.show顯示      6.sort排序  ==\n");
    printf("==  0.exit退出                  ==\n");
    printf("==================================\n");

}

int main(){
    int input=0;
    struct Contact con;
    //con就是通信錄，裏面包含1000個元素的數組和size
    InitContact(&con); 
    //初始化通信錄
    do
    {
        menu();
        printf("請選擇:>");
        scanf("%d", &input);
        switch (input)
        {
        case ADD:
            AddContact(&con);
            //添加信息
            break;
        case DEL:
            DelContact(&con);
            break; 
        case SEARCH:
            SearchContact(&con);
            break;
        case MODIFY:
            ModifyContact(&con);
            break;
        case SHOW:
            ShowContact(&con);
            //打印信息
            break;
        case SORT:
            SortContact(&con);
            break;
        case EXIT:
            printf("退出通信錄\n");
            break;
        default:
            printf("選擇錯誤\n");
            break;
        }
    } while (input);
    return 0;
}

contact.h

#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include <string.h>

#define MAX 1000
#define MAX_NAME 20
#define MAX_SEX 5
#define MAX_TELE 12
#define MAX_ADDR 30

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

struct Peoinfo
{
    char name[MAX_NAME];
    //名字
    int age;
    //年齡
    char sex[MAX_SEX];
    //性別
    char tele[MAX_TELE];
    //電話
    char addr[MAX_ADDR];
    //住址
};

//通信錄類型
struct Contact{
    struct Peoinfo data[MAX];
    //存放一個類型
    int size;
    //記錄當前已有元素個數
};

//聲明函數
//初始化通信錄
void InitContact(struct Contact* ps);
//添加一個信息到通信錄
void AddContact(struct Contact* ps);
//打印通信錄的內容
void ShowContact(const struct Contact* ps);
//刪除通信錄的一個信息
void DelContact(struct Contact* ps);
//查找
void SearchContact(const struct Contact* ps);
//修改
void ModifyContact(struct Contact* ps);
//排序
void SortContact(struct Contact* ps);

contact.c

#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include <string.h>
#include "contact.h"

//初始化通信錄
void InitContact(struct Contact* ps){
    //memset 內存設置，把整個數組設置爲一個值
    memset(ps->data, 0, sizeof(ps->data));
    ps->size = 0;
    //設置通信錄最初只有0
}

//增長一個元素到通信錄裏面
void AddContact(struct Contact* ps){
    if (ps->size == MAX){
        printf("通信錄已滿,沒法增長");
    }
    else
    {
        printf("請輸入名字:>");
        scanf("%s", ps->data[ps->size].name);
        printf("請輸入年齡:>");
        scanf("%d", &(ps->data[ps->size].age));
        printf("請輸入性別:>");
        scanf("%s", ps->data[ps->size].sex);
        printf("請輸入電話:>");
        scanf("%s", ps->data[ps->size].tele);
        printf("請輸入地址:>");
        scanf("%s", ps->data[ps->size].addr);
        ps->size++;
        printf("添加成功\n");
    }
}

void ShowContact(const struct Contact* ps){
    if (ps->size == 0){
        printf("通信錄爲空\n");
    }
    else
    {
        int i = 0;
        printf("%-20s\t%-4s\t%-5s\t%-12s\t%-20s\n", "名字", "年齡", "性別", "電話", "地址");
        //%後面加數字是佔多少各 \t是tab -號是左對齊
        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].tele,
                ps->data[i].addr
                );
        }
    }
}

//static靜態變量 只能在這個文件內部使用
static int FindByname(const struct Contact* ps,char name[MAX_NAME]){
    int i = 0;
    for (i = 0; i < ps->size; i++)
    {
        if (0 == strcmp(ps->data[i].name, name)){
            return i;
        }
    }
    return -1;
}

void DelContact(struct Contact* ps){
    char name[MAX_NAME];
    printf("請輸入要刪除人的名字:>");
    scanf("%s", name);
    //1.查找要刪除的人的位置
    //咱們但願這個函數找到返回元素的下標，找不到返回-1
    int pos=FindByname(ps,name);
    //2.刪除
    if (pos==-1)
    {
        printf("你要刪除的人不存在\n");
    }
    else
    {
        int j = 0;
        for ( j = pos; j < ps->size-1; j++)
        {
            ps->data[j] = ps->data[j + 1];
        }
        ps->size--;
        printf("刪除成功\n");
    }

}

void SearchContact(const struct Contact* ps){
    char name[MAX_NAME];
    printf("請輸入要查找人的名字:>");
    scanf("%s", name);
    int pos = FindByname(ps, name);
    if (pos == -1){
        printf("要查找的人不存在");
    }
    else
    {
        printf("%-20s\t%-4s\t%-5s\t%-12s\t%-20s\n", "名字", "年齡", "性別", "電話", "地址");
        //%後面加數字是佔多少各 \t是tab -號是左對齊
            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].tele,
                ps->data[pos].addr
                );
    }
}

void ModifyContact(struct Contact* ps){
    char name[MAX_NAME];
    printf("請輸入要修改人的名字:>");
    scanf("%s", name);
    int pos = FindByname(ps, name);
    if (pos == -1){
        printf("要修改的信息不存在");
    }
    else{
        printf("請輸入名字:>");
        scanf("%s", ps->data[pos].name);
        printf("請輸入年齡:>");
        scanf("%d", &(ps->data[pos].age));
        printf("請輸入性別:>");
        scanf("%s", ps->data[pos].sex);
        printf("請輸入電話:>");
        scanf("%s", ps->data[pos].tele);
        printf("請輸入地址:>");
        scanf("%s", ps->data[pos].addr);
        printf("修改完成\n");
    }
}

void SortContact(struct Contact* ps){
    if (ps->size == 0){
        printf("通信錄爲空\n");
    }
    else{
        int i = 0;
        for (i = 0; i < ps->size-1; i++)
        {
            printf("%d\n",strcmp(ps->data[i].name, ps->data[i + 1].name));
            if (1 > strcmp(ps->data[i].name, ps->data[i + 1].name)){
            }
            else{
                struct Peoinfo count = ps->data[i + 1];
                ps->data[i + 1] = ps->data[i];
                ps->data[i] = count;
            }
        }
    }
}