7重学C++之【综合案例:通讯录管理系统】
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#include<cstdlib>
#include<iostream>
#include<string>
using namespace std;
#define MAX 1000
struct Person{
string name;
int sex; // 1男2女
int age;
string phone;
string addr;
};
struct Addressbooks{
struct Person person_arr[MAX]; // 通讯录存储上限1000
int size; // 当前通讯录存储数量
};
void show_menu(){
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;
}
void add_person(Addressbooks * abs){
if (abs->size == MAX){
cout << "通讯录已满,无法添加!" << endl;
return;
}else{
cout << "请输入姓名:" << endl;
string name;
cin >> name;
abs->person_arr[abs->size].name = name;
cout << "请输入性别(1--男,2--女):" << endl;
int sex = 0;
while (true){
cin >> sex;
if (sex==1 || sex==2){
abs->person_arr[abs->size].sex = sex;
break;
}
cout << "输入错误,请重新输入:" << endl;
}
cout << "请输入年龄:" << endl;
int age = 0;
while (true){
cin >> age;
if (age>=1 && age<=150){
abs->person_arr[abs->size].age = age;
break;
}
cout << "输入错误,请重新输入:" << endl;
}
cout << "请输入电话:" << endl;
string phone;
cin >> phone;
abs->person_arr[abs->size].phone = phone;
cout << "请输入地址:" << endl;
string addr;
cin >> addr;
abs->person_arr[abs->size].addr = addr;
abs->size++;
cout << "添加成功" << endl;
system("pause"); // 请按任意键继续
system("cls"); // 清屏
}
}
void show_person(Addressbooks * abs){
if (abs->size == 0){
cout << "当前记录为空" << endl;
}else{
for (int i=0; i<abs->size; i++){
cout << "姓名:" << abs->person_arr[i].name << "\t";
cout << "性别:" << (abs->person_arr[i].sex == 1 ? "男" : "女") << "\t";
cout << "年龄:" << abs->person_arr[i].age << "\t";
cout << "电话:" << abs->person_arr[i].phone << "\t";
cout << "地址:" << abs->person_arr[i].addr << endl;
}
}
system("pause");
system("cls");
}
int is_exit(Addressbooks * abs, string name){ // 检测联系人是否存在,存在返回在数组中的位置下标,不存在返回-1
for (int i=0; i<abs->size; i++){
if (abs->person_arr[i].name == name){
return i;
}
}
return -1;
}
void delete_person(Addressbooks * abs){
cout << "请输入要删除的联系人姓名:" << endl;
string name;
cin >> name;
int result = is_exit(abs, name);
if (result == -1){
cout << "查无此人" << endl;
}else{
for (int i=result; i<abs->size; i++){
// 数据前移实现逻辑删除
abs->person_arr[i] = abs->person_arr[i+1];
}
abs->size--;
cout << "删除成功" << endl;
}
system("pause");
system("cls");
}
void find_person(Addressbooks * abs){
cout << "请输入要查找的联系人姓名:" << endl;
string name;
cin >> name;
int result = is_exit(abs, name);
if (result == -1){
cout << "查无此人" << endl;
}else{
cout << "姓名:" << abs->person_arr[result].name << "\t";
cout << "性别:" << (abs->person_arr[result].sex == 1 ? "男" : "女") << "\t";
cout << "年龄:" << abs->person_arr[result].age << "\t";
cout << "电话:" << abs->person_arr[result].phone << "\t";
cout << "地址:" << abs->person_arr[result].addr << endl;
}
system("pause");
system("cls");
}
void modify_person(Addressbooks * abs){
cout << "请输入要修改的联系人姓名:" << endl;
string name;
cin >> name;
int result = is_exit(abs, name);
if (result == -1){
cout << "查无此人" << endl;
}else{
cout << "请输入姓名:" << endl;
string name;
cin >> name;
abs->person_arr[result].name = name;
cout << "请输入性别(1--男,2--女):" << endl;
int sex = 0;
while (true){
cin >> sex;
if (sex==1 || sex==2){
abs->person_arr[result].sex = sex;
break;
}
cout << "输入错误,请重新输入:" << endl;
}
cout << "请输入年龄:" << endl;
int age = 0;
while (true){
cin >> age;
if (age>=1 && age<=150){
abs->person_arr[result].age = age;
break;
}
cout << "输入错误,请重新输入:" << endl;
}
cout << "请输入电话:" << endl;
string phone;
cin >> phone;
abs->person_arr[result].phone = phone;
cout << "请输入地址:" << endl;
string addr;
cin >> addr;
abs->person_arr[result].addr = addr;
cout << "修改成功" << endl;
}
system("pause");
system("cls");
}
void clear_person(Addressbooks * abs){
abs->size = 0; // 逻辑清空
cout << "通讯录已清空" << endl;
system("pause");
system("cls");
}
int main(){
Addressbooks abs;
abs.size = 0;
while (true){
show_menu();
cout << "请输入指令:" << endl;
int select = 0; // 用户输入
cin >> select;
switch (select){
case 1: // 添加联系人
add_person(&abs); // 地址传递才能根据形参修改实参
break;
case 2: // 显示联系人
show_person(&abs);
break;
case 3: // 删除联系人
/*{ cout << "请输入要删除的联系人姓名:" << endl;
string name;
cin >> name;
if (is_exit(&abs, name) == -1){
cout << "查无此人" << endl;
}else{
cout << "确定删除吗?" << endl;
}
break; // 注意C++中case中break上面代码过多容易报错,可以加上{}形成代码段
}*/ // 测试代码
delete_person(&abs);
break;
case 4: // 查找联系人
find_person(&abs);
break;
case 5: // 修改联系人
modify_person(&abs);
break;
case 6: // 清空联系人
clear_person(&abs);
break;
case 0: // 退出通讯录
cout << "欢迎下次使用,再见" << endl;
system("pause");
return 0;
break;
default:
cout << "输入错误,请重新输入:" << endl;
break;
}
}
system("pause"); // 提示按任意键继续,system需要导入<cstdlib>
return 0;
}
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