vb.net - Have to make a program that makes a pyramid -

i have gotten basics how input number of spaces in each row?

this ive done far:

sub main()     dim var char     dim numberofsymbols integer      console.writeline("what variable want use form pyramid?")     var = console.readline      console.writeline("what number of symbols want start with? (odd number)")     numberofsymbols = console.readline()      'taking numberofsymbols 5      console.write("   ")     console.write(var)       console.writeline()     console.write("  ")       x = 1 numberofsymbols - 2         console.write(var)     next      console.writeline()     console.write(" ")       x = 1 numberofsymbols         console.write(var)     next      console.readkey()  end sub 

the output im getting

        aaa    aaaaa 

im not checking in program see if odd number/one character , how should go making program if user chooses random odd number?

i know ill have use repeat until loop how input number of spaces in loop that?

here:

sub main()     dim var char     dim numberofsymbols integer      console.writeline("what variable want use form pyramid?")     var = console.readline     console.writeline("what number of symbols want start with? (odd number)")     numberofsymbols = console.readline()     if numberofsymbols mod 2 = 0 numberofsymbols += 1 'to check if number , add '1' make odd, can use 'numberofsymbols -=1' subtract insead of adding      dim spaces string     dim vars string     = 1 numberofsymbols step 2         spaces = new string(" ", (numberofsymbols - i) / 2)         vars = new string(var, i)         console.writeline(spaces + vars)     next      console.readkey() end sub 

and if want add empty line after each row, can add following line:

        '         '         console.writeline()     next 

hope helps :)