随机点名系统（c++）

#include "Student.h" #include <fstream> #include <iostream> #include <vector> #include <ctime> #include <cstdlib> #include <string> #include <conio.h> using namespace std; void getFileData(vector<Student> & rInfor); void getRecord(char * file); void main() { char* record = "record.txt"; ofstream fout(record, ios_base::out | ios_base::app); vector<Student> infor; int it = 0; int choice; getFileData(infor);//get data from the file srand( time(NULL) ); while ( 1 ) { cout << "1.开始点名 " << "2.显示所有同学点名情况 " << "3.清屏 " << "4.退出 " << endl; while (!((cin >> choice) && choice > 0 && choice < 5)) { cin.clear(); while (cin.get()!='\n') { continue; } cout << "你的输入有误，请重新输入！" << endl; } switch (choice) { case 1: { it = rand() % infor.size(); infor[it].setTime(); infor[it].getInformation(cout); cout << "是否保存点名? <y or n>"; char temp; temp = getch(); if (temp == 'y' || temp == 'Y') { cout << temp; infor[it].getInformation(fout); } else { cout << temp; } cin.get(); cout << endl; break; } case 2: { getRecord(record); break; } case 3: { system("CLS"); break; } case 4: { exit( 1 ); } } } //it = rand() % infor.size(); fout.close(); } void getFileData(vector<Student> & rInfor) { char * fileName = "1.txt"; ifstream fin(fileName, ios_base::out | ios_base::app); if (!fin.is_open()) { cerr << "Could not open the file " << fileName << endl; exit(EXIT_FAILURE); } while( !fin.eof() ) { Student temp(fin); rInfor.push_back( temp ); } fin.clear(); fin.close(); } void getRecord(char * file) { ifstream fin; string temStr; fin.open(file); if (!fin.is_open()) { cerr << "Could not open the file " << file << endl; exit(EXIT_FAILURE); } while (!fin.eof()) { getline(fin,temStr); if (temStr.size() == 0) { continue; } else { cout << temStr << endl; } } fin.clear(); fin.close(); }