//code by Rehan Naeem
#include <iostream>
#include <cstdio>


using namespace std;

enum option {cis32 = 1, otherClasses, quit};
option display_menu();
void switcher(option, double [][4], int [][3], double [][5]);
int record_cis32(double [][4]);
void OtherClasses(int [][3], double [][5]);
void selectionSort(double [][4], int);
void bubbleSort();
bool searchDup1(int , double [][4], int);
bool searchDup2(int , int [][3] , int , int );




int main()
{
    option choose ;
    double arrayOpt1[10][4];
    int arrayOpt2[10][3];
    double anotherOpt2[10][5];
    do
    {
        choose = display_menu() ;
        switcher (choose, arrayOpt1, arrayOpt2, anotherOpt2) ;
    } while (choose != 4) ;     //****************************************change to 3
    return 0 ;
}

option display_menu()
{
    option choose ;
    printf ("Choose an option:\n\n") ;
    printf ("1) CIS 32\n");
    printf ("2) Other Classes\n");
    printf ("3) Quit 32\n\n");
    scanf ("%d",  &choose);
    return choose ;

}


void switcher (option choose, double arrayOpt1[][4], int arrayOpt2[][3], double anotherOpt2[10][5])
{
    bool valid;
    int effective1 ;
    do
    {
        valid = true;
        switch (choose)
        {
            case cis32:
                effective1 = record_cis32(arrayOpt1);
                break;

            case otherClasses:
                OtherClasses(arrayOpt2, anotherOpt2);
                break;

            case quit:
                selectionSort(arrayOpt1, effective1-1);
                for (int i=0; i<effective1; i++)
                {
                    printf ("\n\n%.0lf", arrayOpt1[i][0]) ;
                }


                break;

            default:
                printf("Wrong input.\n\n");
                choose = display_menu();
                valid = false;
        }
    } while (valid == false);

}

int record_cis32(double arrayOpt1[10][4])
{
    static int effective1 = 0;
    int studID , midterm, final, sum=0;
    double avg;
    bool valid1 , valid2 ;
    if (effective1 < 10)
    {
        effective1 += 1;
        do
        {
            valid2 = true;
            printf("\nInput student ID: ");

            do
            {
                valid1 = true ;
                scanf ("%d", &studID ) ;
                if (studID > 100 || studID < 1)
                {
                    printf ("Input a valid student ID:");
                    valid1 = false ;
                }
            } while (valid1 != true ) ;
            arrayOpt1[effective1][0] = studID ;

            if (searchDup1(studID , arrayOpt1, effective1))
            {
                printf ("Duplicate student ID. Re-enter ID.\n");
                valid2 = false;
            }
        }while (valid2 == false) ;

        printf("Input midterm exam score: ");
        do
        {
            valid1 = true ;

            scanf ("%d", &midterm);
            if (midterm > 100 || midterm < 1)
            {
                printf ("Input a valid midterm exam score:");
                valid1 = false ;
            }
        }while (valid1 != true ) ;
        arrayOpt1[effective1][1] = midterm;

        printf("Input final exam score: ");
        do
        {
            valid1 = true ;

            scanf ("%d", &final);
            if (final > 100 || final < 1)
            {
                printf ("Input a valid final exam score:");
                valid1 = false ;
            }
        }while (valid1 != true ) ;
        arrayOpt1[effective1-1][2] = final ;

        sum += midterm + final ;
        avg = double(sum) / 2.00 ;
        arrayOpt1[effective1-1][3] = avg ;
        printf("avg is: %.2lf", arrayOpt1[effective1-1][3]) ;


        printf("\n");
        return effective1;


    }
    else
        printf("\nOut of bounds. Choose another option.\n\n");

}

bool searchDup1(int studID, double arrayOpt1[][4] , int effective1 )
{
    bool found = false;
    for (int i = 0; i<effective1; i++)
    {
        if (arrayOpt1[i][0] == studID)
        {
            found = true;
            break;
        }
    }
    return (found) ;
}

void OtherClasses(int arrayOpt2[][3], double anotherOpt2[][5])
{
    static int effective2 = 0 , effective3 = 0;
    int studID , classCode, score, numbScores, i = 0, sum=0, j ;
    double avg ;
    bool valid1 , valid2 ;
    if (effective2 < 10)
    {
        effective2 += 1 ;
        do
        {
            valid2 = true;
            printf("\nInput student ID: ");

            do
            {
                valid1 = true ;
                scanf ("%d", &studID ) ;
                if (studID > 100 || studID < 1)
                {
                    printf ("Input a valid student ID: ");
                    valid1 = false;
                }
            } while (valid1 != true );
            arrayOpt2[effective2][0] = studID ;

            printf("Input class code: ");
            do
            {
                valid1 = true;
                scanf ("%d", &classCode );
                if (classCode < 1)
                {
                    printf ("Input a valid class code: ");
                    valid1 = false;
                }
            } while (valid1 != true );
            arrayOpt2[effective2][1] = classCode ;

            if (searchDup2(studID , arrayOpt2, effective2, classCode))
            {
                printf ("Duplicate pair of student ID and class code entered. Re-enter the values.\n");
                valid2 = false;
            }
        }while (valid2 == false);

        printf("Input how many scores you want to record: ");
        do
        {
            valid1 = true ;
            scanf ("%d", &numbScores ) ;
            if (numbScores > 4 || numbScores < 2)
            {
                printf ("Input a number of scores (2 to 4): ");
                valid1 = false;
            }
        } while (valid1 != true );
        effective3 = numbScores ;
        arrayOpt2[effective2][2] = numbScores ;


        for (j = 0; j<effective3 ; j++ )
        {
            printf ("Enter score %d: ", j+1) ;
            do
            {
                valid1 = true ;
                scanf ("%d", & score) ;
                if (score < 0)
                {
                    printf ("Input a valid score (greater than 0): ");
                    valid1 = false;
                }
            } while (valid1 != true );

            anotherOpt2[effective2-1][j] = score ;
            sum += score ;
        }
        avg = double(sum) / effective3 ;
        anotherOpt2[effective2-1][5] = avg ;
        printf("avg is: %.2lf", anotherOpt2[effective2-1][5]) ;


        printf ("\n");
    }
    else
        printf("\nOut of bounds. Choose another option.\n\n");
}

bool searchDup2(int studID, int arrayOpt2[][3] , int effective2 , int classCode)
{
    bool found = false;
    for (int i = 0; i<effective2 ; i++)
    {
        if (arrayOpt2[i][0] == studID && arrayOpt2[i][1] == classCode)
        {
            found = true;
            break;
        }
    }
    return (found);
}

void selectionSort(double arrayOpt1[][4], int effective1)
{
    int temp, indexLargest, index;
    for (; effective1 > 0; effective1--)
    {
        indexLargest = 0;
        for (index=1; index <= effective1; index++)
        {
            if (arrayOpt1[index][0] > arrayOpt1[indexLargest][0])
            indexLargest = index;
        }
        if (effective1 != indexLargest)
        {
            temp = arrayOpt1[effective1][0] ;
            arrayOpt1[effective1][0] = arrayOpt1[indexLargest][0] ;
            arrayOpt1[indexLargest][0] = temp ;
        }
    }

}