Parallel Arrays

[piotrowskid]

Please help me at least with DO_7. I'm just completely lost, I've tried everything I know and it is always underlined in red in Visual Studios.

//----------------------------------------------------------------------
// Purpose: Maintain list of clubs by processing commands.   Valid 
//          commands are A (Add), D (Delete), P (Print), and S (Sort,  
//          ascending order). Print an error if the command is invalid  
//          and ignore the rest of the command. Add at the end of the  
//          list.  Delete by replacing the club to be deleted with the  
//          last club in the list. Repeat this process until  
//          end-of-file: Use Ctrl-Z in Visual Studio for end-of-file.
//
// Input:   List of commands, some with arguments, terminated by 
//          end-of-file.
//
// Output:  A message is printed when a club is added to the list, 
//          deleted from the list, and sorted.  If the command is not  
//          valid, a message will be printed. If the P command is typed, 
//          the list is sorted in ascending order using 
//          the Selection Sort
//          algorithm from the textbook and then printed.
//-----------------------------------------------------------------------

#include <iostream>
#include <iomanip>
#include <string>
using namespace std;

const int MAX_CLUBS = 6;
const int CLUB_SPACING = 20;


int Find(const string clubs[], int num, string club);

//DO_8: Write the prototype for function Add here

void Delete(string clubs[], int & num);
void Sort(string clubs[], int num);
void PrintClub(const string clubs[], int num);
void GetClubName(string & name);

int main()
{
   //DO_2: declare an arrays of strings named "clubs" of size MAX_CLUBS
   string clubs[MAX_CLUBS];
   int numClubs = 0;
   char command;

   cout << fixed << showpoint << setprecision(2);

   cin >> command;
   while (cin)
   {
      //DO_3:  write code to call the function to process a command, 
      //       calling the proper function. Valid commands are 
      //       A, D, P, and S.
      if (command == 'A')
      {
         void Add();
      }
      if (command == 'D')
      {
         void Delete();
      }
      if (command == 'P')
      {
         void PrintClub();
      }
      if (command == 'S')
      {
         void Sort();
      }
      else
      {
         cout << "Bad Command!" << endl;
         cin.ignore(200, '\n');
      }
      cin >> command;
   }

   cout << "Normal Termination of Lab 9." << endl;
   return 0;
}

//-----------------------------------------------------------------------
// This function will search for the name in the array club[]. It will
// return a -1 if it is not found, and the index of the array name if it
// is found.
// params: (in, in)
//-----------------------------------------------------------------------
int Find(const string clubs[], int num, string club)
{
   // DO_4: write the body of the Find function. Refer to the comments.
   for (int i = 0; i < MAX_CLUBS; ++i)
   {
      if (clubs[i] == club) 
         return i;
   }
   return -1;
}

//-----------------------------------------------------------------------
// This function will add a club to the end of the list if the 
// club is not already in the list, and if the list is not full.
// params: (out, out)
//-----------------------------------------------------------------------
//DO_5: Complete the function header for the Add function.

void Add(int index, int num)
{
   string club;
   GetClubName(club);
   //DO_6: Call the Find function, saving the result in index.
   
   int Find();
   if (index >= 0)
   {
      cout << club << " is already in the list." << endl;
   }
   else if (num >= MAX_CLUBS)
   {
      cout << club + " wasn't added. List is full." << endl;
   }
   else
   {
      //DO_7: add the club to the end of the array and increment the 
      //      number.
      cout << club + " was added to the list." << endl;
   }
}

//------------------------------------------------------------------------
// This function will delete a club from the array list if the club is 
// in the array. It will replace the club with the last member in the 
// array.
// params: (out,out)
//------------------------------------------------------------------------
void Delete(string clubs[], int & num)
{
   string club;

   GetClubName(club);

   //DO_9: Call the Find function, saving the result in index.

   if (index < 0)
   {
      cout << club + " was not removed because it is not in the list." 
           << endl;
   }
   else
   {
      //DO_10: remove the team by replacing it with the last member, and 
      //       decrement the number of members.

      cout << club + " was removed from the list." << endl;
   }
}

//------------------------------------------------------------------------
// This function prints the list of clubs.
// params: (in,  in)
//------------------------------------------------------------------------
void PrintClub(const string clubs[], int num)
{
   cout << "The list of clubs is:" << endl;
   for (int i = 0; i < num; i++)
      cout << "   " << left << setw(CLUB_SPACING) << clubs[i] << endl;
}

//------------------------------------------------------------------------
// This function will sort the list of club in ascending order.
// params: (out, in)
//------------------------------------------------------------------------
void Sort(string clubs[], int num)
{
   for (int i = 0; i < num - 1; i++)
   {
      //DO_11: declare mindex and define it 
      
      for (int j = i + 1; j < num; j++)
      {
         //DO_12: Check to see if the current slot is smaller than mindex
         //       and take appropriate action.
 
         
      }
      //DO_13: Swap the array cells at i and mindex.

   }
   cout << "List sorted by club." << endl;
}

void GetClubName(string & name)
{
   char dummy;
   // Skip over spaces
   while (cin.peek() == ' ')
      cin.get(dummy);
   // Read characters into name, including spaces, till end of line
   getline(cin, name);
}

[Handy Andy]

Hello piotrowskid,

There are several things that you should correct first before you deal with the code that adds.

To start with your prototypes are not correct. They should match the function definitions and all are missing a needed parameter. More shortly.

In main you define the variable "numClubs", but never use it anywhere. This is a variable that should be passed to every function will know how much of the array is used. In the add and delete functions I would pass this by reference as its value will change and pass it as a "const" value to the other functions.

In main the if statements all contain function prototypes. As prototypes they are wrong. As the function calls they should be they are missing their parameters.

When you remove the "void" the IDE will tell you that the function calls have to few arguments.

The "Add" function is the only function that you did not pass the array to. It is kind of hard for the function to add to an array it does not have access to.

When you correct the prototypes, function definitions and function calls along with passing the necessary parameters to the functions. Coming up with the code to add to the array should be a bit easier. I can understand your problem because the function does not have all the information to properly add to the array.

Once I get the errors fixed and can run the program I will see what else it is doing.

Hope that helps,

Andy