Checking if a string is a number?

[epx]

I am in a beginning programming class. We are writing a calculator program. I would like to know how I can cin to a string then check if the string is a number (float or int) or a command (of type char: / + - *) if it is a number is needs to be converted to float, if it is a command it needs to be converted to char. Any ideas? Thanks!

-epx

 

[TGM]

Hi

there is a set of functions for these checks:

isalnum, isalpha, isprint, __isascii, ispunct,
isspace, isdigit, isgraph, islower, isupper

Just check the doc for details about usage

HTH

Thierry
EMail: Thierry.Marneffe@swing.be
WebSite:

http://users.swing.be/TGMSoft/

 

[CDuddley]

Use a switch-case flow control for the operators.

-CDudd