结构体1，知识点（结构体），存放人员详情，名字，性别，年龄等

struct person
{
string m_name;
int m_sex;
int m_age;
string m_phone;
string m_addr;
};

结构体2，知识点（结构体数组），存放人员数量和人员数组

struct addressbooks
{
struct person personarray[MAX];
int m_size;
};

上面两个结构体存放我们的数据，我们基于这两个结构体操作

菜单界面，用于输入提示

void showMenu()
{
	cout << "*****1.添加联系人*****" << endl;
	cout << "*****2.显示联系人*****" << endl;
	cout << "*****3.删除联系人*****" << endl;
	cout << "*****4.查找联系人*****" << endl;
	cout << "*****5.修改联系人*****" << endl;
	cout << "*****6.清空联系人*****" << endl;
	cout << "*****7.退出通讯录*****" << endl;
}

主函数循环测试输入并跳转函数

知识点，cin输入，switch选择

在这里插入图片描述

增删改查之添加

判断人数是否满，满了直接退出

人数没有满通过结构体2抽象出人员表进行添加操作

知识点->结构体指针访问 .结构体访问

a->b[人员数量].具体参数

完了之后人员数要+1防止数据覆盖

void addperson(addressbooks *abs)
{
	if(abs->m_size==MAX)
	{
		cout <<"通讯录已满,不能再添加!" <<endl;
		return;
	}
	else
	{
		//姓名输入
		string name;
		cout << "请输入姓名"<< endl;
		cin >>name;
		abs->personarray[abs->m_size].m_name=name;
		//性别输入
		int sex=0;
		cout << "请输入性别"<< endl;
		cout << "输入1为男"<< endl;
		cout << "输入2为女"<< endl;
		while (true)
		{
        cin >> sex;
		if(sex==1||sex==2)
		{
		abs->personarray[abs->m_size].m_sex=sex;
		break;
		}
		else
		{
		cout <<"输入错误,请重新输入" << endl;
		break;		
		}

		}
		
		//年龄输入
		int age=0;
		cout << "请输入年龄"<< endl;
		cin >>age;
		if( age>=0 && age<=150 )
		abs->personarray[abs->m_size].m_age=age;
		else
        cout << "你不是地球人"<< endl;

		//电话输入
		string phone;
		cout << "请输你的电话号码"<< endl;
		cin >> phone;
		abs->personarray[abs->m_size].m_phone=phone;

		//地址输入
		string address;
		cout << "请输你的住址"<< endl;
		cin >> address;
		abs->personarray[abs->m_size].m_addr=address;

		//更新通讯录人数
		abs->m_size++;

		cout << "添加成功" << endl;
		system("pause");
        system("cls");		
	}
}

增删改查之删除

输入字符串通过isExist查找返回结构体数组下标

然后把结构体数组地址全部前移

人员总数减去1

isExist函数本体在下面

//删除指定联系人
void deletePerson(addressbooks *abs)
{

	cout << "请输入您要删除的联系人"  << endl;
	string name;
	cin >> name;
	int ret =isExist(abs,name);
	if(ret!=-1)
	{
		for(int i=ret;i<abs->m_size;i++)
		{
			abs->personarray[i]=abs->personarray[i+1];
		}
		abs->m_size--;//更新人员数
		cout << "删除成功" << endl;
	}
	else
	{
		cout << "查无此人" << endl;
	}
	system("pause");
	system("cls");

}

isExist函数本体

遍历数组，对照结构体1的名字成员，返回下标

int isExist(addressbooks * abs,string name)
{
	for(int i=0; i <abs->m_size; i++)
	{
		if(abs->personarray[i].m_name==name)
		{
			return i;
		}
	}
	return -1;
}

增删改查之修改（看源码理解，没有新知识点）

void revampPerson(addressbooks* abs)
{
cout << "请输入您要修改的联系人"  << endl;
string name;
cin >> name;
int ret =isExist(abs,name);
if(ret!=-1)
{       
	    cout <<"新名字修改为"<< endl;
	    string new_name;
        cin >> new_name;
		abs->personarray[ret].m_name=new_name;

	    cout <<"性别修改为"<< endl;
		int new_sex;
        cin >> new_sex;
		abs->personarray[ret].m_sex=new_sex;

	    cout <<"年龄修改为"<< endl;
		int new_age;
        cin >> new_age;
		abs->personarray[ret].m_age=new_age;

	    cout <<"家庭住址修改为"<< endl;
		string new_addr;
        cin >> new_addr;
		abs->personarray[ret].m_addr=new_addr;

	    cout <<"电话修改为"<< endl;
		string new_phone;
        cin >> new_phone;
		abs->personarray[ret].m_phone=new_phone;		
}
else
{
		cout << "查无此人" << endl;
}
	    system("pause");
	    system("cls");
}

增删改查之总体查询（看源码理解，没有新知识点）

void showPerson(addressbooks * abs)
{
	if(abs->m_size==0)
	{
	 cout << "记录为空" << endl;
	}	
	else
		for(int i=0;i<abs->m_size;i++)
		{
			cout <<"姓名"<<abs->personarray[i].m_name<<"\t";
			cout <<"性别"<<(abs->personarray[i].m_sex==1 ? "男":"女")<<"\t";
			cout <<"年龄"<<abs->personarray[i].m_age<<"\t";
			cout <<"电话"<<abs->personarray[i].m_phone<<"\t";
			cout <<"住址"<<abs->personarray[i].m_addr<<endl;
			cout<<endl;
			cout<<endl;
		}
		system("pause");
		system("cls");
}

增删改查之单独查询（看源码理解，没有新知识点）

void findPerson(addressbooks* abs)
{
	string name;
	cout <<"请输入你要查找的联系人名字"<<endl;
	cin >> name;
    int ret =isExist(abs,name);
    if(ret!=-1)
	{
		cout<<"名字 : "<<abs->personarray[ret].m_name<<"\t";
		cout<<"年龄 : "<<abs->personarray[ret].m_age<<"\t";
		cout<<"住址 : "<<abs->personarray[ret].m_addr<<"\t";
		cout<<"电话 : "<<abs->personarray[ret].m_phone<<"\t";
		cout<<"性别 : "<<(abs->personarray[ret].m_sex==1?"男":"女")<<endl;
	}
else
{
	 cout << "查无此人" << endl;
}
	 system("pause");
	 system("cls");

}