' FB 1.05.0 Win64

Dim As Integer i, j
Input "Enter two positive integers, separated by a comma"; i, j
Dim a(1 To i, 1 To j) As Integer
a(i, j) = i * j
Print "a("; Str(i); ","; Str(j); ") ="; a(i, j)
Erase a
Print
Print "Press any key to quit"
Sleep