system crash when char is entered during int switch? solution?

This is a discussion on system crash when char is entered during int switch? solution? within the C++ Programming forums, part of the General Programming Boards category; i noticed when i have a switch statement the default does not catch chars... here is a sample- Code: int ...

  1. #1
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    Jul 2012
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    system crash when char is entered during int switch? solution?

    i noticed when i have a switch statement the default does not catch chars...
    here is a sample-

    Code:
    int input;
    cin>>input;
    
    switch(input)
    {
    
    case 1:
    statement;
    break;
    
    case 2:
    statement;
    break;
    
    case 3:
    statement;
    break;
    
    default:
    cout<<"cant do that\n";
    break;
    
    }
    im guessing this is because the switch statement is only taking ints, but is there a way I can prevent a system crash if myself or someone accidentally inputs a char rather than an int?

  2. #2
    C++ Witch laserlight's Avatar
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    Check with:
    Code:
    if (cin >> input)
    Quote Originally Posted by Bjarne Stroustrup (2000-10-14)
    I get maybe two dozen requests for help with some sort of programming or design problem every day. Most have more sense than to send me hundreds of lines of code. If they do, I ask them to find the smallest example that exhibits the problem and send me that. Mostly, they then find the error themselves. "Finding the smallest program that demonstrates the error" is a powerful debugging tool.
    Look up a C++ Reference and learn How To Ask Questions The Smart Way

  3. #3
    Frequently Quite Prolix dwks's Avatar
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    How to deal with invalid input from std::cin: RPG troubles
    dwk

    Seek and ye shall find. quaere et invenies.

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  4. #4
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    sweet, thanks!! currently hit a wall in my programming learning journey, will return with many questions after some good sleep

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