9x9 Multiplication Table

1. Consider the following program which will print a simple 9x9 multiplication table.
   

   
   #include 
   using std::cout;
   using std::endl;
   
   int main()
   {
       int i, j;
       for (i=1; i<=9; i++)
           for (j=1; j<=9; j++)
               cout << i << '*' << j << '=' << i*j << endl;
       return 0;
   }
   
   

2. Try to modify the above program and format the output as 3 by 3 blocks as below.
   
3. Try to right-justify the products. Submit this version as the homework.