在简单的文件处理程序中获得异常输出

这段代码有什么问题？我正在尝试写入二进制文件 MCQ 类型问题例如，问题：如果一台计算机向其他计算机提供数据库服务，那么它将被称为？1.网络服务器 2.应用 3.数据库服务器 4.FTP服务器

编号： 1

答案： 3

.

.

.

但我得到了不寻常的输出。请查看我提供注释的代码。程序询问问题并将其写入二进制文件。id 会自动递增，问题和答案由用户提出。如果问题是"x"，则程序停止，如果是其他任何东西，它会询问答案并将所有三个id，question，answer设置为临时对象，然后将其写入文件。

该程序对于第一个问题和答案工作正常，然后直接询问第二个答案的答案，而无需询问第二个问题。

#include <iostream>
#include <fstream>
#include<string.h>
#include<conio.h>

using namespace std;
class questions{    //start of class
                    //private members
int id; //identification number for question ( 1,2,3,....)
char ques[100]; //question
int ans;    //answer (1,2,3,4) MCQ
public: //public members
void displayques() //displays question
{
    cout<<ques; //the same
}
int getans()    //returns answer
{
    return ans; //the same
}
int getid() //returns id
{
    return id; //the same
}
void setques(char q[]) //set the given string in parameter to the question.
{
strcpy(ques,q);
}
void setid(int i) //set the given int as id
{
id=i;
}
void setans(int a) //set the given int as answer
{
ans=a;
}
};          //end of class questions
int main()  //start of main
{
    questions quesobj;  //create an object of class questions
ofstream quesfile;  //creates and object of class ofstream
quesfile.open("questions.dat",ios::out|ios::binary);    //opens questions.dar in output mode as binary with the object quesfile of ofstream

char ask='y';   //to stop the process when its changed to n
char tempques[100]; //to temporarily store the question
int tempid=1;   //to temporarily store the id, initially at 1, later is incremented
int tempans;    //to temporarily store the answer
while(ask!='n') //runs upto the the point when use wants to escape the loop
{

    cout<<"Question? or enter x to stop"<<endl; //asks the questions also ask if user want to escape can enter x
    gets(tempques); //gets the question in temporary variable
    cout<<"Question registered"<<endl;  //shows question is ready to be written
    if(strcmp(tempques,"x")==0)      //if user enter the question as x
    {
        ask='n'; //sets ask to n which will end the loop
    }
    else        //if user enters something else than x, it is considered the question
    {
            cout<<"Answer:"<<endl;  //ask for the answer
            cin>>tempans;   //stores answer in temporary variable
            cout<<"Answer registered"<<endl; //shows answer is ready to be written
            quesobj.setid(tempid);  //sets id to the temp object of the class questions
            quesobj.setques(tempques); //sets question to the temp object of the class questions
            quesobj.setans(tempans); //sets answer to the temp object of the class questions
       quesfile.write((char *)&quesobj, sizeof(quesobj));   //write the temp object of class questions to the binary file
       tempid++;   //tempid is incremented for the next loop so that every question has its own id
    }

} //end of while
quesfile.close();   // closes the file using the object of ofstream
}

输出：

Question? or enter x to stop
This is my first question?
Question registered
Answer:
2
Answer registered
Question? or enter x to stop
Question registered
Answer:
_