letters

This is a discussion on letters within the C++ Programming forums, part of the General Programming Boards category; if a program wants you to enter a number, if you were to happen to enter a letter is there ...

  1. #1
    Registered User
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    letters

    if a program wants you to enter a number, if you were to happen to enter a letter is there any way to make the program say something like "hey you idiot i said number" THX!!

  2. #2
    Registered User
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    One solution is isdigit().

    Kuphryn

  3. #3
    Registered User
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    Another way might be string streams.

  4. #4
    Casual Visitor
    Join Date
    Oct 2001
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    350
    Code:
    #include <iostream.h>
    
    int main()
    {
       int digit;
       
       cout << "Enter a number: ";
       cin >> digit;
       
       if(cin.fail())
       {
          cin.clear(1);
          cin.ignore(80, '\n');
          
          cout << "Hey you idiot! I said number." << endl;
       }
       
       return 0;
    }
    Or something similar
    I haven't used a compiler in ages, so please be gentle as I try to reacclimate myself. :P

  5. #5
    Student Forever! bookworm's Avatar
    Join Date
    Apr 2003
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    132
    I agree with Ronin.
    Use If then or Switch statements. They are easy and hassle-free.

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