134 lines
3.0 KiB
C++
134 lines
3.0 KiB
C++
// 实现电话簿管理程序， Mytel类描述单个电话号码，TelManager类负责管理电话号码。把增、删、改、查功能封装到该类中。要求电话号码能从磁盘读写。
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#include <bits/stdc++.h>
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using namespace std;
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class Mytel {
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public:
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void getdata() { cin >> name >> telno; }
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void setname(char a[]) { strcpy(name, a); }
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void settelno(char a[]) { strcpy(telno, a); }
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void putdata() { cout << name << setw(12) << telno << endl; }
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string getname() { return name; }
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string gettelno() { return telno; }
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private:
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char name[12];
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char telno[12];
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};
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class TelManager {
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private:
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vector<Mytel> a;
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public:
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void loadfile() {
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ifstream input("phone.txt");
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if (!input) {
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cout << "File cannot be opened." << endl;
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return;
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}
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Mytel s;
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char name[12], telno[12];
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input >> name >> telno;
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s.setname(name);
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s.settelno(telno);
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while (input) {
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a.push_back(s);
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input >> name >> telno;
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s.setname(name);
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s.settelno(telno);
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};
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input.close();
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}
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void display() {
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cout << "姓名" << setw(8) << "电话" << endl;
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for (int i = 0; i < a.size(); i++)
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cout << a[i].getname() << setw(12) << a[i].gettelno() << endl;
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}
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void search() {
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string sname;
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cout << "输入要查询的姓名（可只输入姓氏）:";
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cin >> sname;
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cout << "输出查询结果:" << endl;
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cout << "姓名" << setw(8) << "电话" << endl;
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for (int i = 0; i < a.size(); i++)
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if (a[i].getname() == sname)
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a[i].putdata();
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}
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void add() {
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Mytel one;
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cout << "姓名" << setw(8) << "电话" << endl;
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one.getdata();
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a.push_back(one);
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}
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void del() {
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string dname;
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cout << "输入要删除的姓名（可只输入姓氏）:";
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cin >> dname;
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for (int i = 0; i < a.size(); i++)
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if (a[i].getname() == dname)
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a.erase(a.begin() + i);
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}
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void modify() {
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string mname;
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char mtelno[12];
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cout << "输入要修改的姓名（可只输入姓氏）:";
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cin >> mname;
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for (int i = 0; i < a.size(); i++)
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if (a[i].getname() == mname) {
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cout << "电话：";
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cin >> mtelno;
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a[i].settelno(mtelno);
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}
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}
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void writefile() {
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ofstream file("phone.txt");
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for (int i = 0; i < a.size(); i++)
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file << a[i].getname() << "\t" << a[i].gettelno() << endl;
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file.close();
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}
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};
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int main() {
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int sel;
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TelManager m;
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while (1) {
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cout << "***********************电话薄管理系统***********************";
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cout << endl
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<< endl;
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cout << "1:加载数据 2:输出数据 3:按姓名查询 4:添加数据" << endl
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<< "5:删除数据 6:修改数据 7.保存数据 0:退出" << endl;
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cout << "************************************************************";
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cout << "\n请选择 (0 - 7): ";
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cin >> sel;
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switch (sel) {
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case 1:
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m.loadfile();
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break;
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case 2:
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m.display();
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break;
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case 3:
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m.search();
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break;
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case 4:
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m.add();
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break;
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case 5:
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m.del();
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break;
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case 6:
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m.modify();
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break;
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case 7:
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m.writefile();
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break;
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case 0:
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exit(1);
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}
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}
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return 0;
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}
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