java help
The problem is if i assign the array with a number it works fine but if i define it with a letter that will hold a number it gets error
The reason i placed a letter was so that the array isn't a fixed value so they could enter as many students as they want by typing it in via the D in the StudentID array hope thats sounds right
Code with the Array numbers defined this one works
//Program for Assignment of Software Development
//Richard Meredith
import java.util.*;
public class Assigns
{
//public static int D ;
public static String studentID[] = new String[2];
public static int marks[][] = new int[10][8];
public static Scanner kybd = new Scanner(System.in);
public static String response;
public static int Total = 0;
public static int FinalTotal[] = new int[2];
public static void main (String[]args)
{
menu();
}
public static void menu() // Entry function
{
int input;
System.out.println(" Please select an option\n");
System.out.println("1. Enter Student ID and Exam marks");
System.out.println("2. Display current Data");
System.out.println("3. Display Total marks");
System.out.println("4. Dislay Grades");
System.out.println("5. Save Data");
input = kybd.nextInt();
switch(input)
{
case 1:
{
GetID();
}
case 2:
{
Display();
}
case 3:
{
//Stats
}
case 4:
{
//Modify
}
case 5:
{
//Search
}
case 6:
{
//Save
}
case 7:
{
//Quit
}
}
}
public static void GetID()
{
for (int c = 0; c < 2;c++)
{
System.out.println("Please Enter the student ID");
studentID[c] = kybd.next();
System.out.println("Please enter the eight exams marks");
for (int a = 0; a < 8; ++a)
{
System.out.println("Enter mark" + " " +( a + 1) + " ");
marks[c][a] = kybd.nextInt();
if (marks[c][a] > 20)
{
System.out.println("Entry out of score limit");
a = a ;
c = c ;
System.out.println("Enter mark" + " " +( a + 1) + " ");
marks[c][a] = kybd.nextInt();
}
else
if(marks[c][a] < -1)
{
System.out.println("Entry out of score limit");
a = a ;
c = c ;
System.out.println("Enter mark" + " " +( a + 1) + " ");
marks[c][a] = kybd.nextInt();
}
}
}
}
public static void Display()
{
//System.out.println("\nStudentID 1 2 3 4 5 6 7 8 % Grade");
for (int c = 0; c < 2; c++)
{
System.out.print("\n"+ studentID[c] + " ");
for (int a = 0; a < 8; ++a)
{
System.out.print(" " + marks[c][a] + " ");
}
MarksTotal(c);
Grade();
}
}
public static void MarksTotal(int c)
{
for (c = 0; c < 2; ++c)
{
Total = 0;
for (int a = 0; a < 8; ++a)
{
if (marks[c][a] > -1)
{
Total = Total + marks[c][a];
FinalTotal[c] = Total;
}
}
}
System.out.print(Total);
}
public static void Grade()
{
if (Total > 70)
{
System.out.print(" Distiniction");
}
if (Total <=70 && Total > 60)
{
System.out.print(" Merit");
}
if (Total > 40 && Total <= 60)
{
System.out.print(" Pass");
}
if (Total <= 40)
{
System.out.print(" Fail");
}
}
public static void SaveFile()
{
//Save to file
}
public static void LoadFile()
{
}
}
CODE WITH ARRAY LETTER INSTEAD OF NUMBER THIS DOESN'T WORK
//Program for Assignment of Software Development
//Richard Meredith
import java.util.*;
public class Assigns
{
public static int D ;
public static String studentID[] = new String[D];
public static int marks[][] = new int[10][8];
public static Scanner kybd = new Scanner(System.in);
public static String response;
public static int Total = 0;
public static int FinalTotal[] = new int[D];
public static void main (String[]args)
{
menu();
}
public static void menu() // Entry function
{
int input;
System.out.println(" Please select an option\n");
System.out.println("1. Enter Student ID and Exam marks");
System.out.println("2. Display current Data");
System.out.println("3. Display Total marks");
System.out.println("4. Dislay Grades");
System.out.println("5. Save Data");
input = kybd.nextInt();
switch(input)
{
case 1:
{
GetID();
}
case 2:
{
Display();
}
case 3:
{
//Stats
}
case 4:
{
//Modify
}
case 5:
{
//Search
}
case 6:
{
//Save
}
case 7:
{
//Quit
}
}
}
public static void GetID()
{
System.out.println("please enter number of students");
D = kybd.nextInt();
for (int c = 0; c < D;c++)
{
System.out.println("Please Enter the student ID");
studentID[c] = kybd.next();
System.out.println("Please enter the eight exams marks");
for (int a = 0; a < 8; ++a)
{
System.out.println("Enter mark" + " " +( a + 1) + " ");
marks[c][a] = kybd.nextInt();
if (marks[c][a] > 20)
{
System.out.println("Entry out of score limit");
a = a ;
c = c ;
System.out.println("Enter mark" + " " +( a + 1) + " ");
marks[c][a] = kybd.nextInt();
}
else
if(marks[c][a] < -1)
{
System.out.println("Entry out of score limit");
a = a ;
c = c ;
System.out.println("Enter mark" + " " +( a + 1) + " ");
marks[c][a] = kybd.nextInt();
}
}
}
}
public static void Display()
{
//System.out.println("\nStudentID 1 2 3 4 5 6 7 8 % Grade");
for (int c = 0; c < D; c++)
{
System.out.print("\n"+ studentID[c] + " ");
for (int a = 0; a < 8; ++a)
{
System.out.print(" " + marks[c][a] + " ");
}
MarksTotal(c);
Grade();
}
}
public static void MarksTotal(int c)
{
for (c = 0; c < D; ++c)
{
Total = 0;
for (int a = 0; a < 8; ++a)
{
if (marks[c][a] > -1)
{
Total = Total + marks[c][a];
FinalTotal[c] = Total;
}
}
}
System.out.print(Total);
}
public static void Grade()
{
if (Total > 70)
{
System.out.print(" Distiniction");
}
if (Total <=70 && Total > 60)
{
System.out.print(" Merit");
}
if (Total > 40 && Total <= 60)
{
System.out.print(" Pass");
}
if (Total <= 40)
{
System.out.print(" Fail");
}
}
public static void SaveFile()
{
//Save to file
}
public static void LoadFile()
{
}
}
Can anyone point me in the right direction
[8551 byte] By [Rico3k] at [2007-11-11 7:25:43] 