C++课程设计

#include <iostream>#include <string>#include <iomanip>#include <fstream>#include <cstdlib>using namespace std;class book{public:book();char inter_face();void add_person();void del_person();void show_all();void alter();void select();void save_new();private:    string   name;string address;string number;string post;string qq;};book::book(){name = "\0";address = "\0";number = "\0";post = "\0";qq = "\0";}//首页char book::inter_face(){system("cls");cout <<endl;cout<<"\t\t=================================================" <<endl<<"\t\t=                                               =" <<endl<<"\t\t=                通    迅   录                  =" <<endl <<"\t\t=                                               =" <<endl<<"\t\t=     1. 添加新联系人.      4. 修改信息.        =" <<endl <<"\t\t=                                               =" <<endl<<"\t\t=     2. 删除联系人.        5. 查询联系人.      =" <<endl<<"\t\t=                                               =" <<endl<<"\t\t=     3. 显示所有联系人.    6. 关闭通迅录.      =" <<endl <<"\t\t=                                               =" <<endl<<"\t\t=================================================" <<endl <<endl<<"\t\t\t选择:" ;char choose;cin >>choose;fflush(stdin);return choose;}//1.void book::add_person(){cout <<endl <<"根据下面提示输入新联系人信息" <<endl <<endl<<"姓名:" ;cin >>name;fflush(stdin);cout <<"电话: ";cin >>number;fflush(stdin);cout <<"QQ   : ";cin >>qq;fflush(stdin);save_new();cout <<endl <<endl <<"新联系人信息已经保存" <<endl <<endl;system("pause");}//2.void book::del_person(){ofstream outData("temp.txt", ios::out);ifstream inData("pbook.txt", ios::in); //if (!outData || !inData){cout <<endl <<"对不起，找不到文件" <<endl;system("pause");return;}string sign;cout <<endl <<"你要删除输入姓名:";cin >>sign;string str1;bool flag = true;string str;while (inData >>name){getline(inData, str);if ((sign==name)){cout <<endl <<"你想删除的联系人:" <<endl <<endl;cout <<str1 <<endl;cout <<setiosflags(ios::left) <<setw(17) <<name<<" "<<str <<endl;flag = false;break;}outData <<setiosflags(ios::left) <<setw(17) <<name<<" "<<str <<endl;}if (flag){cout <<endl <<"对不起，联系人中没你找的人" <<endl <<endl;}else{while (getline(inData, str)){outData <<str <<endl;}outData.close();inData.close();ofstream out("pbook.txt", ios::out);ifstream in("temp.txt", ios::in);if (!out || !in){cout <<endl <<"对不起，不能打开文件" <<endl <<endl;system("pause");return;}while (getline(in, str)){out <<str <<endl;}out.close();in.close();cout <<endl <<"这个人的信息已经从你的通迅录中删除" <<endl <<endl;}system("pause");    }//3.void book::show_all(){ifstream inData("pbook.txt",ios::in);if (!inData){cout <<endl <<"对不起，没有找到文件" <<endl;system("pause");return;}bool flag = true;string record;while (getline(inData, record)){if (flag){cout <<endl <<"所有联系人信息如下: "<<endl;}cout <<record <<endl;flag = false;}if (flag){cout <<endl <<"你的通迅录中没有联系人" <<endl <<endl;}else{cout <<endl <<"所有联系人已经全部显示出来" <<endl <<endl;}system("pause");}//4.void book::alter(){ofstream outData("temp.txt", ios::out);ifstream inData("pbook.txt", ios::in); //if (!outData || !inData){cout <<endl <<"对不起，找不到文件" <<endl;system("pause");return;}string sign;cout <<endl <<"你要修改输入姓名:";cin >>sign;string str1;bool flag = true;string str;while (inData >>name){getline(inData, str);if ((sign==name)){cout <<endl <<"你想修改的联系人:" <<endl <<endl;cout <<str1 <<endl;cout <<setiosflags(ios::left) <<setw(17) <<name<<" "<<str <<endl;cout <<endl <<"请根据下面提示修改信息: " <<endl;cout <<"姓名 :" ;cin >>name;fflush(stdin);cout <<"电话号:";cin >>number;fflush(stdin);cout <<"QQ    :";cin >>qq;fflush(stdin);break;}outData <<setiosflags(ios::left) <<setw(17) <<name<<" "<<str <<endl;}if (flag){cout <<endl <<"对不起，联系人中没你找的人" <<endl <<endl;}else{while (getline(inData, str)){outData <<str <<endl;}outData.close();inData.close();ofstream out("pbook.txt", ios::out);ifstream in("temp.txt", ios::in);if (!out || !in){cout <<endl <<"对不起不能打开文件" <<endl <<endl;system("pause");return;}while (getline(in, str)){out <<str <<endl;}out.close();in.close();cout <<endl <<"这个人的信息已经在你的通迅录中修改" <<endl <<endl;}system("pause");    }//5.void book::select(){ifstream inData("pbook.txt",ios::in);if (!inData){cout <<endl <<"对不起，文件找不到" <<endl;system("pause");return;}string sign;cout <<endl <<"输入你想查找的联系人的姓名: ";cin >>sign;fflush(stdin);string str1;bool flag = true;string str;while (inData >>name){getline(inData, str);if ((name==sign)){cout <<endl <<"你要查找的联系人是: " <<endl <<endl;cout <<str1 <<endl;cout <<setiosflags(ios::left) <<setw(17) <<name<<str <<endl;flag = false;system("pause");break;}}}void book::save_new(){ofstream outData("pbook.txt", ios::app);if (!outData){cout <<endl <<"对不起，打开文件失败" <<endl <<endl;system("pause");return;}outData << setiosflags(ios::left) << setw(17) << name<<" " << setw(16) << number <<" "<< setw(18) << qq <<" "<<endl;outData.close();}enum power{ADD = '1', DEL = '2', SHOW = '3', Alter = '4', Select = '5', END = '6'};int main(){char choose;book abj;while (choose = abj.inter_face()){switch (choose){case ADD:abj.add_person();break;case DEL:abj.del_person();break;case SHOW:abj.show_all();break;case Alter:abj.alter();break;case Select:abj.select();break;case END:cout <<endl <<"谢谢使用" <<endl <<endl;exit(0);break;default:break;}}return 0;}