Thread: isnumeric

I'm looking for an isnumeric function. I saw a few diference google references but the best I can make is:

Code:

			if (!isnumeric(strSSN))
			{
				strSSN = "000000000";
			}

This gives me "'isnumeric' : undeclared identifier"

What header shoudl I user? I'm guessing that's the problem.

isdigit() will test one character to see if it is a valid digit. You could easily write your own isnumeric() function to test the entire string. Don't forget to allow for '-' and '.' characters in the string.