Here is the C++ program to find sum of elements above and below the main diagonal of square matrix.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | #include<iostream> using namespace std; int main() { int arr[5][5], a = 0, b = 0, i, j, n; cout << "Enter size of matrix(max 5):"; cin >> n; cout << "Enter the matrix:\n"; for (i = 0; i < n; ++i) for (j = 0; j < n; ++j) cin >> arr[i][j]; for (i = 0; i < n; ++i) for (j = 0; j < n; ++j) if (j > i) a += arr[i][j]; else if (i > j) b += arr[i][j]; cout << "\nSum of elements above the diagonal:" << a; cout << "\nSum of elements below the diagonal:" << b; return 0; } |
Output
Enter size of matrix(max 5):3
Enter the matrix:
1 2 3
4 5 6
3 0 2
Sum of elements above the diagonal:11
Sum of elements below the diagonal:7
