can anyone help me with this....i was wondering what does "<<" do????? and what does it do over here:-

Code:void g(int b[][SIZE], int m, int n) { int j, k, x = 0; for (k = 0; k < n; k++) m = 3, n = 2 { for (j = 0; j < m; j++) b = 3 4 << row0 x = x + b[j ][k ]; 6 5 << row 1 printf(”%d^%4d\n”, k, x);7 2 << row 2 } } Show output of g(b, m, n)