Question

What is the output of the following nested loops:

   int m, n;
   for (m = 3; m > 0; m--)
   {
       System.out.print((m – 3) + "\t");
       for (n = 0; n < 3; n++)
           System.out.print(m * n);
       System.out.println();
   }

Answer 1

output:

Loop 1
(m-3) prints 0 after that one tab space
0   n loop print m*n from n=0 to n
036
Loop 2
(m-3) prints -1 after that one tab space
-1   n loop print m*n from n=0 to n
024
Loop 3
(m-3) prints -2 after that one tab space
-2   n loop print m*n from n=0 to n
012