通讯录的具体实现步骤

Question

#define _CRT_SECURE_NO_WARNINGS
#define MAX_PERSON 1000
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

typedef struct Person{
char name[1024];
char tel[1024];
}Person;

typedef struct AddressBook {
Person persons[MAX_PERSON];
int size;
}AddressBook;
void init(AddressBook* addressbook) {
addressbook->size = 0;
}
void addPerson(AddressBook* addressbook){
printf("新增联系人\n");
int cursize = addressbook->size;
if (cursize >= MAX_PERSON){
printf("通讯录已满，增加失败！\n");
}
Person* p = &addressbook->persons[cursize];
printf("请输入联系人姓名：");
scanf("%s", p->name);
printf("请输入联系人电话：");
scanf("%s", p->tel);
printf("新增联系人成功!\n");
addressbook->size++;
}
void findPerson(AddressBook* addressbook){
printf("按照姓名查找联系人\n");
printf("请输入要查找的姓名: ");
char name[1024] = { 0 };
scanf("%s", name);

for (int i = 0; i < addressbook->size; i++) {
    Person* p = &addressbook->persons[i];
    if (strcmp(name, p->name) == 0) {
        printf("[%d]\t\t%s\t\t%s\n", i, p->name, p->tel);
    }
}
printf("查找联系人完成!\n");

}
void delPerson(AddressBook* addressbook){
printf("删除联系人\n");
printf("请输入要删除的联系人的编号: ");
int id = 0;
scanf("%d", &id);
if (id < 0 || id >= addressbook->size) {
printf("您输入的编号有误!\n");
return;
}
if (id == addressbook->size - 1){
addressbook->size--;
printf("删除成功!\n");
return;
}
addressbook->persons[id] = addressbook->persons[addressbook->size - 1];
addressbook->size--;
printf("删除成功!\n");
}
void updatePerson(AddressBook* addressbook){
printf("更新联系人\n");
printf("请输入要更新的联系人的编号: ");
int id = 0;
scanf("%d", &id);
if (id < 0 || id >= addressbook->size) {
printf("您输入的编号有误!\n");
return;
}
Person* p = &addressbook->persons[id];
printf("请输入联系人姓名：");
scanf("%s", p->name);
printf("请输入联系人电话：");
scanf("%s", p->tel);
printf("更新联系人成功!\n");

}
void printPerson(AddressBook* addressbook){
printf("查所有联系人：\n");
for (int i = 0; i < addressbook->size; i++) {
Person* p = &addressbook->persons[i];
printf("[%d]\t\t%s\t\t%s\n", i, p->name, p->tel);
}
printf("共计 [%d] 条记录\n", addressbook->size);
}
void clearPerson(AddressBook* addressbook){
for (int i = 0; i < addressbook->size; i++) {
addressbook->size--;
if (addressbook->size == 0){
break;
}
}
printf("清空成功\n");
}

void sortPerson(AddressBook* addressbook){
if (addressbook->size <= 0){
printf("通讯录中没有联系人，请添加!\n");
}
int i = 0;
int j = 0;
for (i = 0; isize - 1; i++)
{
for (j = 0; jsize - i - 1; j++)
{
if (strcmp(addressbook->persons[j].name, (addressbook->persons[j + 1]).name)>0)
{
Person tmp = addressbook->persons[j];
addressbook->persons[j] = addressbook->persons[j + 1];
addressbook->persons[j + 1] = tmp;
}
}
printf("排序成功！\n");
}
}
int menu(){
printf("=====================\n");
printf(" 1. 新增联系人\n");
printf(" 2. 查找联系人\n");
printf(" 3. 删除联系人\n");
printf(" 4. 修改联系人\n");
printf(" 5. 查看所有联系人\n");
printf(" 6. 清空所有联系人\n");
printf(" 7. 以名字排序所有联系人\n");
printf(" 0. 退出\n");
printf("=====================\n");
printf(" 请输入您的选择:");
int choice = 0;
scanf("%d", &choice);
return choice;
}
typedef void(Func)(AddressBook);
AddressBook addressbook;
int main()
{
Func funcs[] = {
NULL,
addPerson,
findPerson,
delPerson,
updatePerson,
printPerson,
clearPerson,
sortPerson,

};
init(&addressbook);

while (1){
    int choice = menu();
    if (choice == 0){
        printf("GoodBye!!!");
        break;
    }
    if (choice<0 || choice>sizeof(funcs) / sizeof(funcs[0])){
        printf("您的输入无效!\n");
        continue;
    }
    funcs[choice](&addressbook);
}
system("pause");
return 0;

}
有无大佬帮忙解释一下各指针和地址的运用

Answer 1

首先定义Person结构体，自定义了AddressBook 类型，包含100个元素的Person类型数组，在main方法选择菜单，分别实现增删改查等功能。