[Dev-C++] Checking data type

 Hi, 

 Yes, this code above works, but only when ONE(!) simbol is entered. 
If I try to enter "4kdkdkd", the output says that the digital number 
was entered. I can't use that code in this prototype: 
  
 // int weight ??
 // char weight ??
 // string weight ??
 // char[10] weight ??

 do
 {
     cout << "Input Your weight:";
     cin >> weight;
     // Checking type of entered value
     // because the program will crash, if value isn't digital number
     // if value is not NUMBER cout << "Please, input number!";
 } while ( /* value is bad */ )
 
 // do some calculations with weight
 
 Thanks,

 Exuss
 
 
>Your code was not proper ANSI C++ too. Your code corrected and fully
>portable:
>
>
>#include <cstdlib>
>#include <cctype>
>#include <iostream>
>
>int main()
>{
>    using namespace std;
>
>	unsigned char number;
> 
>	cout << "\n\tInput number or letter: ";
>	cin >> number;
> 
>     if(isalnum(number))
>     {
>      	cout << "\n\tIt is alnum" <<endl;
>       
>        if(isdigit(number))
>   	      cout << "\tIt is digit" <<endl;
>      
>        else if(isalpha(number))
>        {
>          cout << "\tIt is alpha" << endl;
>         
>          if(islower(number))
>            cout << "\tIt is lower"<< endl;
>        }
>     }
>     
>      
>	cout << endl;
>
>	system("PAUSE");
>}
>
>
>
>Ioannis
>
>* Ioannis Vranos
>* Programming pages: http://www.noicys.f2s.com
>* Alternative URL: http://run.to/noicys
>
>


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