Re: [Dev-C++] Checking data type

[Kevin W. <ke...@me...>]

Change the type of  " number "  to char.
The output will probably still be not you want, so I would use e.g. :

cout << "\tIs digit?: ";
if(isdigit(number))
    cout << "Yes" << endl;
else
    cout << "No" << endl;


----- Original Message ----- 
From: Exuss Draugas <dra...@ce...>
To: <Dev...@li...>
Sent: Saturday, December 22, 2001 8:10 AM
Subject: [Dev-C++] Checking data type


> 
> 
>  Hi, All! :)
> 
>  How to check input data type from the console? For example, I need 
> only number, and how to check that some letters wasn't entered?
>  
>  This code shows doesn't work for me, if I try to enter some number, 
> it shows a zero in every condition. ://
> 
> #include <stdlib.h>
> #include <ctype.h>
> #include <iostream.h>
> 
> void main()
> {
> 
> int number;
> cout << "\n\tInput number or letter: ";
> cin >> number;
> cout << "\n\tIs alnum?: " << isalnum(number) << endl;
> cout << "\tIs digit?: " << isdigit(number) << endl;
> cout << "\tIs alpha?: " << isalpha(number) << endl;
> cout << "\tIs lower?: " << islower(number) << endl;
> cout << endl;
> system("PAUSE");
> }
> 
>   Are there other way to check what was entered from console, digital 
> number or text ???
> 
>  Thanx,
> 
>   Exuss :)
>