Define the outer for loop to iterate through each row of the theater. Use the loop variable current$\_$row and iterate num$\_$rows times, starting with integer $1.$

Step $2$

In the outer loop's body, initialize current$\_$column$\_$letter with $\text{'}$A$\text{'}.$

Step $3$

In the outer loop's body, define the inner for loop to iterate through each column of the theater. Use the loop variable current$\_$column and iterate num$\_$columns times, starting with integer $1.$