Ignoring data after valid entered

This is a discussion on Ignoring data after valid entered within the C++ Programming forums, part of the General Programming Boards category; I have searched for this and could not find it. It is not in my textbook either. Okay my prompt ...

  1. #1
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    Ignoring data after valid entered

    I have searched for this and could not find it. It is not in my textbook either.

    Okay my prompt looks this... say the user enters "1 4 junk data"
    i.e.
    Enter two numbers: 1 4 junk data

    How do I get those 2 numbers and ignore "junk data"? Thank you for your help.

  2. #2
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    There are several solutions. One is to keep track of the total number of spaces " " At space equals 2 or greater, stop processing cin.

    Kuphryn

  3. #3
    Registered User Cela's Avatar
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    >>How do I get those 2 numbers and ignore "junk data"?
    Just read them, as long as the two numbers come before the junk and the junk doesn't count as a number or there's whitespace between the second number and the junk then it'll work fine.
    Code:
    #include <iostream>
    #include <string>
    
    using namespace std;
    
    int main()
    {
      int a, b;
    
      cout<<"Enter two numbers: "<<flush;
      cin>> a >> b;
    
      cout<<"You entered -- "<< a <<" -- "<< b <<endl;
    }
    *Cela*

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