Author： elfin
Basic cases of C + + Learning.
void showHome()
{
// show home page
cout << "===================================================" << endl;
cout << "===\t\t 1、添加联系人 \t\t===" << endl;
cout << "===\t\t 2、显示联系人 \t\t===" << endl;
cout << "===\t\t 3、删除联系人 \t\t===" << endl;
cout << "===\t\t 4、查找联系人 \t\t===" << endl;
cout << "===\t\t 5、修改联系人 \t\t===" << endl;
cout << "===\t\t 6、清空联系人 \t\t===" << endl;
cout << "===\t\t 0、退出通讯录 \t\t===" << endl;
cout << "===================================================" << endl;
}这里的每个选项本来是使用了字体颜色的，但是生成的exe文件不能显示，所有去掉了相应的代码！
person结构体：
struct person
{
string p_name;
string p_phone;
string p_address;
int p_age = 0;
int p_sex = 1;
};address结构体：
#define Max 1000
struct address
{
int len = 0;
struct person personArr[Max];
};这里对通讯录的最大容量使用了宏变量进行定义！
void options(address * s)
{
while (true)
{
// home page选择要进行的操作
int select = 0;
showHome();
cin >> select;
switch (select)
{
case 1:
{
// 添加联系人
addPerson(s);
break;
};
case 2:
{
// 显示联系人
showAddress(s);
break;
};
case 3:
{
string name;
cout << "输入要删除的联系人姓名：" << endl;
cin >> name;
int index = existPerson(s, name);
deletePerson(s, index);
break;
}
case 4:
{
// 查找联系人
string name;
cout << "输入查找的联系人姓名：" << endl;
cin >> name;
int index = existPerson(s, name);
if (index == -1)
{
cout << "联系人"<< name << "不存在" << endl;
system("pause");
system("cls");
break;
}
printPerson(&s->personArr[index]);
system("pause");
system("cls");
break;
}
case 5:
{
// 修改联系人
string name;
cout << "输入要修改的联系人姓名：" << endl;
cin >> name;
int index = existPerson(s, name);
if (index == -1)
{
cout << "联系人" << name << "不存在" << endl;
system("pause");
system("cls");
break;
}
printPerson(&s->personArr[index]);
modifyPerson(&s->personArr[index]);
system("pause");
system("cls");
break;
}
case 6:
{
// 清空联系人
s->len = 0;
cout << "已经清空通讯录" << endl;
system("pause");
system("cls");
break;
}
case 0:
{
int out = 0;
cout << "您将要退出通讯录系统，输入\033[33m 1 \033[0m确认退出，输入 0 返回主界面" << endl;
cin >> out;
if (out == 0)
{
system("cls");
break;
}
else if (out == 1)
{
return;
}
else
{
cout << "您输入的信息有误，即将返回Home菜单……" << endl;
Sleep(1200);
system("cls");
}
break;
}
default:
{
cout << "输入无效字符，请重新输入：" << endl;
break;
}
}
}
}这一步实际上是搭好项目的框架，每个case的代码块是需要逐步完成的！
void modifyPerson(person* s)
{
string name;
cout << "请输入联系人姓名：" << endl;
cin >> name;
s->p_name = name;
string phone;
cout << "请输入联系人电话：" << endl;
cin >> phone;
s->p_phone = phone;
string location;
cout << "请输入联系人地址：" << endl;
cin >> location;
s->p_address = location;
int age;
cout << "请输入联系人年龄：" << endl;
cin >> age;
s->p_age = age;
int sex;
cout << "请输入联系人性别：\n 1：男 2：女" << endl;
cin >> sex;
s->p_sex = sex;
}先写这个函数实际上是为添加联系人做准备，因为其修改部分代码一样！
void addPerson(address* s)
{
if (s->len >= Max)
{
cout << "当前通讯录已满，不能添加联系人，即将返回Home菜单……" << endl;
Sleep(1200);
system("cls");
return;
}
else
{
modifyPerson(&s->personArr[s->len]);
s->len++;
cout << "联系人添加成功"<<endl;
cout << "即将返回Home菜单……" << endl;
Sleep(1000);
system("cls");
return;
}
}结合选择函数的case完成添加联系人的操作！
void printPerson(person* s)
{
cout << "姓名：" << s->p_name << "\t"
<< "电话：" << s->p_phone << "\t"
<< "住址：" << s->p_address << "\t"
<< "年龄：" << s->p_age << "\t"
<< "性别：" << (s->p_sex == 1 ? "男" : "女") << "\t"
<< endl;
}void showAddress(address* s)
{
if (s->len == 0)
{
cout << "当前通讯录为空，即将返回Home菜单……" << endl;
Sleep(1200);
system("cls");
return;
}
else {
for (int i = 0; i < s->len; i++)
{
printPerson(&s->personArr[i]);
}
system("pause");
system("cls");
}
}int existPerson(address* s, string name)
{
if (s->len == 0)
{
cout << "当前通讯录为空" << endl;
return -1;
}
else {
for (int i = 0; i < s->len; i++)
{
if (s->personArr[i].p_name == name)
{
return i;
}
}
return -1;
}
}int main()
{
// 创建通讯录结构体变量
struct address ads;
// 进入Home界面进行操作
options(&ads);
system("pause");
return 0;
}关于首页菜单选项中的未提及选项请参考options函数！
完！
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