Question

This is a homework question and im still a newbie to java.
Write a code segment that computes the sum of all the values in marks.

This is my answer and it has compilation errors. Please help

class myArray{

    public static void main(String args []){

        int [] [] marks = {{1,2,3,4,5}, {6,7,8,9}, {10,11,12}};
        for(int i = 0; i<marks.length; i++){
            int sum = 0;
            for(int j = 0; j <marks[i].length; j++) {
                sum = sum + makrs[j][i];
            }
        }
        System.out.println(sum);

    }
}

Answer 1

There are two syntactical errors and one type.

1. Move int sum =0; above for loop as you need it outside the loop to print the value
2. Correct marks reading index from marks[j][i] to marks[i][j]

3. Correct the typo in the same line as above (sum = sum + makrs[j][i];). You have typed makrs in place of marks

   int [] [] marks = {{1,2,3,4,5}, {6,7,8,9}, {10,11,12}};         
   
   int sum = 0;
   for(int i = 0; i<marks.length; i++){
       for(int j = 0; j <marks[i].length; j++){
           sum = sum + marks[i][j];
       }
   }
   System.out.println(sum);