Student Grades For Three Exams And Average In Arrays?

For my lab this week I have to print out four arrays. The arrays have to be 5 units long. The first three arrays are the student's exam grades for exam 1, 2 & 3 and the fourth array should be the average for each student's three tests. The program should ask the user to input the grades in and then the program should compute the average. For example the program should print this if these are the exam grades the user imputs:

Exam 1 Exam 2 Exam 3 Average
65 79 80 74.66
79 82 59 73.33
99 100 98 99
and so on.......

I thought I wrote the program perfectly and when I compile it there are no errors but when I run it, it only lets me input the numbers for the first three students and then prints out something so strange.

here is my program:

public class Lab9{
public static void main(String[] args){
java.util.Scanner input = new java.util.Scanner(System.in);
int i, sum;
double avg;
sum = 0;
int A[ ] = new int [5];
int B[ ] = new int [5];
int C[ ] = new int [5];
double avg1[ ] = new double[5];

[code]....