/******************************************************************************\
 * QUESTION #2                                                                *
 * Create a program that will keep track of 5 students and their grades.      *
 * The grades will be kept in an array of up to 10 grades.                    *
 * To do this, you will need to create a multi-dimensional array of grades    *
 * where each column (or row) is assigned to each student.                    *
\******************************************************************************/
 
 
 
#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <string.h>
 
float grade[5][10];
char *StudentNames[5]= {0};
int totalStudent=0;
 
int AddStudentName(void);
int EnterGrades(void);
int DisplayData(void);
 
int main(int argc, char* argv[])
{
    int i=0,j=0;
    for(i=0;i<5;i++)
        for(j=0;j<10;j++)
            grade[i][j] = -1;
 
 
    while(1)
    {
        char choice;
        printf("\n\n\n\n");
        printf("\n/**********************************************************\\");
        printf("\n * Chioce           Function                               *");
        printf("\n  ********************************************************* ");
        printf("\n *    1             Add student name.                      *");
        printf("\n *    2             Enter Grades.                          *");
        printf("\n *    3             Display student-grade data.            *");
        printf("\n *  Any othey key   Exit program.                          *");
        printf("\n\\**********************************************************/");
        printf("\nEnter Chioce:..");
        choice=getche();
        switch(choice)
        {
        case '1':
            AddStudentName();
            break;
        case '2':
            EnterGrades();
            break;
        case '3':
            DisplayData();
            break;
        default:
            return 0;
        }
 
    }
 
 
    return 0;
} //end main 
 
int AddStudentName(void)
{
    if(totalStudent < 5)
    {
        char sName[50]={0};
        totalStudent++;
        printf("\nEnter Student %d name(default-Student%d) : ",totalStudent,totalStudent);
        flushall();
        gets(sName);
        if(strlen(sName)==0)
            sprintf(sName,"Student%d",totalStudent);
 
        StudentNames[totalStudent-1] = (char *)calloc(strlen(sName)+1,sizeof(char));
        strncpy(StudentNames[totalStudent-1],sName,strlen(sName));
 
    }
    else
    {
        printf("\n **** Maximum 5 student can be entered.  Press any key to continue.");
        getch();
    }
    return 0;
}
int EnterGrades(void)
{
    if(totalStudent != 0)
    {
        int studentNo=0, j=0;
        int choice;
        printf("\nChoice - Student Name");
        for(;studentNo<totalStudent;studentNo++)
            printf("\n%4d - %s",studentNo+1,StudentNames[studentNo]);
 
        printf("\n\nSelect student for whom you want to enter grade. Enter chioce...");
        choice = getche();
        studentNo = choice-1-'0';
 
        while(j<10 && grade[studentNo][j]!=-1) j++;
 
        if(j==10)
            printf("\n10 grades already entered for the selected student. No more grade can be entered.");
        else
        {
            printf("\n Enter Grade : ");
            scanf("%f",&grade[studentNo][j]);
        }
    }
    else
    {
        printf("\nPlease Enter student Names first. Press any key to continue.");
        getch();
    }
 
    return 0;
}
int DisplayData(void)
{
    if(totalStudent != 0)
    {
        int i=0,j=0;
        for(i=0;i<totalStudent;i++)
        {
            if(StudentNames[i]!=0)
                printf("\n Student Name : %s",StudentNames[i]);
 
            for(j=0;j<10;j++)
            {
                if(grade[i][j]!=-1)
                    printf("\n\t\t - Grade %d = %d", j+1, grade[i][j]);
                else if(j==0)
                {
                    printf("\n\t** No Grade entered for the student..\n");
                    break;
                }
                else
                {
                    printf("\n");
                    break;
                }
 
            }
        }
        printf("\n == End of data.. == \n");
    }
    else
    {
        printf("\n======== No data to Display. ========= Press any key to continue.");
        getch();
    }
    getch();
    return 0;
}

gets(sName);

#include <conio.h>
 
flushall();
getch();