2D array

Question

Program that ask the user row and column size of a 2d array and asks the user for the elements. Write the total of the sum of each row multiplied with the row number.
Example:
The elements of array is 1-9 with row being 3 and column being 3.

Output would be :
1 2 3
4 5 6
7 8 9
Total : 108

Explanation:
1 2 3 ---> (1+2+3) * 1 = 6
4 5 6 ---> (4+5+6) * 2 = 30
7 8 9 ---> (7+8+9) * 3 = 72
// 6+30+72 Total: 108

I already did the most part and is struggling on the multiply part..

https://code.sololearn.com/c9fNwmJH9AbF/?ref=app

Answer 1

Multiply <sum> by ( <i> + 1 ) when adding row wise sum to <total> at line 13 (plus 1 because <i> began with zero)

total += sum * ( i + 1 );

Answer 2

https://code.sololearn.com/cYByjW6ZFcnr

Answer 3

Thanks man Ipang.. i dont know why i didn't realize that answer.. like i could have swear i did it or just didn't realize it..