Thread: C++ Checking Data Types

  1. #1
    G Fresh

    Smile C++ Checking Data Types

    When I input an integer value using cin >> , how can I implement error-checking to make sure an integer was entered?

  2. #2
    Registered User Liam Battle's Avatar
    Join Date
    Jan 2002
    Well easy, just use the ctype.h

    You can use isdigit() or isalpha() function

    I also have the feeling you want to know how to check the size of the datatype that was used, you can use the sizeof keyword to do that...

    ie: a = sizeof b;

    those two things should help ya out
    Last edited by Liam Battle; 04-28-2002 at 10:47 PM.

  3. #3
    ¡Amo fútbol!
    Join Date
    Dec 2001
    Search the board, it has come up before. Look up cin.good(), cin.bad(),

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