Do ... while()循环不能正常工作

Question

我提示用户输入有关汽车的数据.我正在使用的Do ... while()循环第一次正常工作,然后在第一次之后无法正常工作.代码如下,我正在使用Dev-C++.谢谢你的帮助和时间.

#include <iostream>
#include<conio.h>
#include<cstring>
#include<fstream>
#include <iomanip.h>


using namespace std;

int main()
{

  char manufacturer[16], model[16], year[10], miles[10], car_cost[12];
  char response;
  ofstream OS ("usedcars.txt", ios::out);
  cout<<"for each car please enter :"<<endl;

  do
  {
    ofstream OS ("usedcars.txt", ios::app);
    cout<<"The manufacturer: ";
    cin.getline(manufacturer, 16);
    cout<<"The model: ";
    cin.getline(model, 16);
    cout<<"The year: ";
    cin.getline(year, 8);
    cout<<"The miles: ";
    cin.getline(miles, 8);
    cout<<"The cost of car $: ";
    cin.getline(car_cost, 10);

   OS << manufacturer << setw(9) << model << setw(8) << year << setw(11)<< miles << setw(8) << car_cost << endl;
  cout<<"Do you want to continue?";
  cin>>response;

 }
 while (response!='n');  


  return 0;  
}

*******程序的输出********

for each car please enter :
The manufacturer: Toyota
The model: corolla
The year: 2005
The miles: 123,000
The cost of car $: 7,999
Do you want to continue?y
The manufacturer: The model: Honda
The year: Civic
The miles: 67,850
The cost of car $: 9,200
Do you want to continue?n

*** usedcars.txt **************

Toyota  corolla    2005    123,000   7,999
    Honda   Civic     67,850   9,200

Answer 1

我想你在输入"y"后按回车键进行回复.但是你只读了一个y字符.所以'\n'会被传递给下一个读取,这是您的制造商.因此那里没有数据.

正如stefaanv所写,使用cin.ignore.关于这一点可以在这里找到一个有趣的一点:清除cin输入:是cin.ignore不是一个好方法？