Thread: hoe to combine three vectors together

i try this. i create a class that contains three vectors

the first vector to store the questions.

Code:

#include <iostream>
#include <vector>


using namespace std;
class Quiz{
            
       private:
        int countR;
        int countW;
        int result;
        string Ans;
        
        vector <string> Country;
        vector <string> Question;
        vector <string> Answers;
        vector <string> userAnsw;
        vector <string> ResultQuestions;
        
    public:
           Quiz();
          void inputanswer();
          void checkanswer();
};


 Quiz::Quiz(){
      Country.push_back("US");
      Country.push_back("UAE");
      Country.push_back("China");
      Answers.push_back("dollar");
      Answers.push_back("Derham");
      Answers.push_back("Yen");
}             




void Quiz::inputanswer(){
     for(int i=0; i<3; i++){
cout<< "what is the currency of "<<Country.at(i)<<" ?" << "\n";
cin>>Ans;
userAnsw.push_back(Ans);
}
cout<<"********************"<<endl;
cout<<" "<<"\n";
cout<<" "<<"\n";
cout<<" "<<"\n";
for(int i=3; i<userAnsw.size(); i++){
cout<<userAnsw.at(i)<< "\n";


}
     
}       


main(){
  Quiz q;
  q.inputanswer();
  cin.get(); 
    
       }

now, i want to create the second and third vector that check for the answers, if the answer is correct or not and display the result as below:

=== Result of Currency Quiz ===
Total Questions : 10
Correct answers : 5
Wrong answers: 5
You scored 50% on this quiz.

The Questions which you answered incorrectly were
Q2. What is the currency of Singapore?
Q5. What is the currency of UK?
Q7. What is the currency of Malaysia?
Q8. What is the currency of Pakistan?
Q9. What is the currency of Australia?

Well next you should define your checkanswer() function.

The beginning of the code looks nice and neat and then the end of the code "forgets" indentation and then main doesn't even have a type. Whats going on?

main.cpp: In member function ‘void Quiz::inputanswer()’:
main.cpp:49:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
main.cpp: At global scope:
main.cpp:58:6: warning: ISO C++ forbids declaration of ‘main’ with no type [-Wreturn-type]

i make some changes on the code and try to solve it using Qt Create. But there is just three errors i try to solve it. Could you help me please

Code:

#include<QtCore/QCoreApplication>
#include<QVector>
#include<QMap>
#include<QString>
#include<QDebug>

classQuiz{

private:
inti,countR,countW;

QMap<QString,QString>my_map;
QVector<QString>my_vec;

public:
Quiz();
voidstart();
};

Quiz::Quiz(){
}

voidQuiz::start(){
my_map["UK"]="Dollarl";
my_map["UAE"]="Derham";
my_map["China"]="Yen";

QVector<QString>::iteratormy_it;
QMap<QString,QString>::iteratorit;

i=1;
countR=0;
countW=0;

QStringans;

for(it=my_map.begin();it!=my_map.end();it++){
qDebug()<<"Q"<<i<<"whatisthefullformfor"+(*it).first<<"?\n";
cin>>ans;

if((*it).second==ans){
countR++;
}
else{
countW++;
}
i++;
}

qDebug()<<"ResultofITacronymsQuize"<<endl;
qDebug()<<"TotalQuestion:10"<<endl;

qDebug()<<"Correctanswers:"<<countR<<""<<endl;
qDebug()<<"Wronganswers:"<<countW<<""<<endl;

qDebug()<<"Youscored"<<countR*10<<"%onthisquize"<<endl;
system("pause");

}

intmain(intargc,char*argv[]){
QCoreApplicationa(argc,argv);
QuizQ;
Q.start();

}