围绕找到联系人，删除联系人操作

        找到联系人——>使用for循环进行一一对应，如果找到跳出来

        删除联系人——>使用for循环，让每次的后一位把前一位给覆盖住，从而实现删除操作

#include<iostream>
using namespace std;
#include<string>
#define MAX 1000

//设计联系人结构体
struct Person
{
	//姓名
	string m_Name;
	//性别，公1母2
	int m_Sex;
	//年龄
	int m_Age;
	//电话号
	string m_Phone;
	//地址
	string m_Addr;
};

//设计通讯录结构体
struct Addressbooks
{
	//通讯录当前可存储最大联系人个数
	struct Person personArray[MAX];
	//通讯录当前存储联系人个数
	int m_Size;
};

//添加联系人
void addPerson(Addressbooks* abs)
{
	//通讯录是否满，如果满的话就不能再添加
	if (abs ->m_Size == MAX)
	{
		cout << "兄弟，塞太多了，下不去了" << endl;
		return ;
	}
	else
	{
		//姓名
		string name;
		cout << "输入姓名" << endl;
		cin >> name;
		abs->personArray[abs->m_Size].m_Name = name;
		
		//性别，公1母2
		cout << "输入性别" << endl;
		cout << "1--男" << endl;
		cout << "2--女" << endl;

		int sex = 0;

		while(true)
		{
			//输入1/2可退出循环
			//如果输入有误则需要重新输入
			cin >> sex;
			if (sex == 1 || sex == 2)
			{
				abs->personArray[abs->m_Size].m_Sex = sex;
				break;//执行退出
			}
			cout << "输入有误，请重新输入" << endl;
		}
		
		//年龄
		int age=0;
		cout << "请输入年龄" << endl;
		cin >> age;
		abs->personArray[abs->m_Size].m_Age = age;
		
		//电话号
		cout << "请输入电话号" << endl;
		string phone = "";
		cin >> phone;
		abs->personArray[abs->m_Size].m_Phone = phone;
		
		//地址
		cout << "请输入地址" << endl;
		string address;
		cin >> address;
		abs->personArray[abs->m_Size].m_Addr = address;

		//更新通讯录
		abs->m_Size++;

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

void showPerSon(Addressbooks* abs)
{
	//通讯录联系人0个
	//通讯录联系人!0个
	if (abs->m_Size == 0)
	{
		cout << "当前通讯录空白" << 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 << "手机号" << abs->personArray[i].m_Phone << "\t";
			cout << "通讯地址" << abs->personArray[i].m_Addr << endl;
		}
	}

	system("pause");	//任意键继续
	system("cls");		//清屏

}

//检测联系人是否存在，存在的话显示出来，不存在返回一个-1
//参数1 通讯录 参数2 对比姓名
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;	//用for循环完一遍通讯录都没有找到，返回-1
}

//删除指定联系人
void deletePerson(Addressbooks * abs)
{
	cout << "请输入你要删除的联系人" << endl;

	string name;
	cin >> name;

	//ret==-1 未查到
	//ret!=-1 查到联系人
	int ret = isExist(abs, name);

	if (ret != -1)
	{
		//查到此人，进行删除操作
		for (int i = ret; i < abs->m_Size; i++)
		{
			abs->personArray[i] = abs->personArray[i + 1];
		}
		abs->m_Size--;
		cout << "删除成功" << endl;
	}
	else
	{
		cout << "查无此人" << endl;
	}
	system("pause");
	system("cls");
}
//菜单界面
void showMenu()
{
	cout << "*****************************" << endl;
	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 << "*****   0、退出通讯录   *****" << endl;
	cout << "*****************************" << endl;
}

int main()
{
	//创建通讯录结构体变量
	Addressbooks abs;
	//初始化人员个数
	abs.m_Size = 0;
	int select = 0;

	while (true)
	{
		//菜单调用
		showMenu();

		cin >> select;

		switch (select)
		{
		case 1: //1、添加联系人
			addPerson(&abs);	//利用地址传递，可以改变实参
			break;
		case 2:	//2、显示联系人
			showPerSon(&abs);
			break;
		case 3:	//3、删除联系人
			/*{
			cout << "请输入联系人姓名" << endl;
			string name;
			cin >> name;

			if (isExist(&abs, name) == -1)
			{
				cout << "查无此人" << endl;
			}
			else
			{
				cout << "找到此人";
			}
			}*/
			deletePerson(&abs);
			break;
		case 4:	//4、查找联系人
			break;
		case 5:	//5、修改联系人
			break;
		case 6:	//6、清空联系人
			break;
		case 0:	//0、退出通讯录
		{
			cout << "欢迎下次使用" << endl;
			system("pause");
			return 0;
			break;
		default:
			break;

		}

		system("pause");
		return 0;
		}
	}
}