switch(qValue)
{
case q1:
   code;
   code;
   break;
case q2:
   ...
case qError:
   ...
default:
   ...
}

    //Define Variables
    int a, b, c, d, e;
    a = 1;
    b = 2;
    c = 3;
    d = 4;
 
    //Question choices
    cout<<"Please select your choice below:\n\n";
    cout<<"1.  Sample Question 1\n";
    cout<<"2.  Sample Question 2\n";
    cout<<"3.  Sample Question 3\n";
    cout<<"4.  Sample Question 4\n\n";
 
    cin>>e;
    cout<<"\n\n";
    cin.ignore();
 
    //If answers are selected goto the specified lesson.  If not, ask again.
    if(e==a){
    system("cls");
    goto q1; //links to the program.  I know it is wrong but just an example
    }
 
    else if(e==b){
    system("cls");
    goto q2; //links to the program.  I know it is wrong but just an example
    }
 
    else if(e==c){
    system("cls");
    goto q3; //links to the program.  I know it is wrong but just an example
    }
 
    else if(e==d){
    system("cls");
    goto q4; //links to the program.  I know it is wrong but just an example
    }
 
    else {
    cout<<"Incorrect selection.  Please select from one of the options above\n\n";
    system("pause");
    system("cls");
    goto outline;
    }

#include <iostream>
using namespace std;
 
bool q1()
{
   static const char question[] = "What are the colors of the United States Flag?";
   static const char *answer[] =
   {
      "Black, Gold, Green",
      "Red, White",
      "Blue, Black, Red, White",
      "Red, White, Blue",
   };
   cout << question << "\n\n";
   for ( size_t i = 0; i < sizeof answer / sizeof *answer; ++i )
   {
      cout << i + 1 << ". " << answer[i] << '\n';
   }
   cout << "\nanswer? ";
   int response;
   cin >> response;
   cin.ignore();
   return response == 4;
}
 
bool q2()
{
   static const char question[] = "What do the stars of the flag mean?";
   static const char *answer[] =
   {
      "One for each State",
      "One for each President",
      "One for each Senator",
      "The amount of wars the USA won",
   };
   cout << '\n' << question << "\n\n";
   for ( size_t i = 0; i < sizeof answer / sizeof *answer; ++i )
   {
      cout << i + 1 << ". " << answer[i] << '\n';
   }
   cout << "\nanswer? ";
   int response;
   cin >> response;
   cin.ignore();
   return response == 1;
}
 
int main()
{
   while ( q1() == 0)
   {
      cout << "\nIncorrect, please try again.\n";
   }
   cout << "\nCorrect!\n";
   while ( q2() == 0)
   {
      cout << "\nIncorrect, please try again.\n";
   }
   cout << "\nCorrect!\n";
   return 0;
}

#include <iostream>
using namespace std;
 
struct Question
{
   const char *question;
   const char *answer[4];
   int correct;
};
 
static Question Quiz[] =
{
   {  // Question 1
      "What are the colors of the United States Flag?",
      {
         "Black, Gold, Green",
         "Red, White",
         "Blue, Black, Red, White",
         "Red, White, Blue",
      },
      4
   },
   {  // Question 2
      "What do the stars of the flag mean?",
      {
         "One for each State",
         "One for each President",
         "One for each Senator",
         "The amount of wars the USA won",
      },
      1
   },
};
 
bool ask(size_t j)
{
   cout << Quiz[j].question << "\n\n";
   for ( size_t i = 0; i < sizeof Quiz[j].answer / sizeof *Quiz[j].answer; ++i )
   {
      cout << i + 1 << ". " << Quiz[j].answer[i] << '\n';
   }
   cout << "\nanswer? ";
   int response;
   cin >> response;
   cin.ignore();
   return response == Quiz[j].correct;
}
 
int main()
{
   for ( size_t i = 0; i < sizeof Quiz / sizeof *Quiz; ++i )
   {
      while ( ask(i) == 0 )
      {
         cout << "\nIncorrect, please try again.\n\n";
      }
      cout << "\nCorrect!\n";
   }
   return 0;
}