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    Help with a method

    My teacher assigned us to make a quadratic class as extra credit and I am having a problem with this particular method. It says I am missing a return statement cause all my return statements are in If statements. I just don't know what I would return if none of these If statements are true.

    public int vertexQuad(){
    if(calcVertX()>0 && calcVertY()>0)
    return 1;

    if(calcVertX()<0 && calcVertY()>0)
    return 2;

    if(calcVertX()<0 && calcVertY()<0)
    return 3;

    if(calcVertX()>0 && calcVertY()<0)
    return 4;

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    You can have return the method any value you want, except offcourse the value you are already returning because then you dont know why the value returned.
    Two solutions:

    return -1 at the end of the function, and test whenever you use this function on -1 .

    Make an enum for this rather than integer

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