how to read in a negative number using cin

This is a discussion on how to read in a negative number using cin within the C++ Programming forums, part of the General Programming Boards category; is there any possible way to read in a negative number if they put in, lets say a -3, but ...

  1. #1
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    how to read in a negative number using cin

    is there any possible way to read in a negative number if they put in, lets say a -3, but the same function shoudl still be able to read a positive value?

  2. #2
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    Of course. Every type can store negative and positive numbers. Here is an example:

    int num =0;
    cout<<"Enter a positive or negative integer:\n";
    cin>>num;
    cout<<num<<endl;

  3. #3
    Cheesy Poofs! PJYelton's Avatar
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    Unless you declare the variable as unsigned, then you shouldn't have any problem with entering in a negative value.

  4. #4
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    what if im using multiple input at once
    i want to be able to put in something like

    -5 3/4

    and cin it as

    char trash;
    int wholenumber,num,denom;
    cin >> wholenumber >> trash >> num >> trash >> denom;


    would that work?

  5. #5
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    ah it does work
    thanks!

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