2:17 >perl 417_SoPW.pl
Yes, 4 is a number
Yes, -7 is a number
Yes, 0.656 is a number
Yes, -67.35555 is a number
No, 5. is not a number
No, 56F is not a number
No, .32  is not a number
No, -.04 is not a number

 2:17 >