Android If Statement Not Evaluating as Expected

Question

I have the following If statement:

private boolean NextLevel(int intCorrectAnswers, int intNumberOfQuestionsAsked) {
    if (intNumberOfQuestionsAsked >= 20 && ((intCorrectAnswers / intNumberOfQuestionsAsked) >= .8)){
        return true;
    } else {
        return false;
    }
}

What I want is if the number of questions asked is at least 20 and the percentage correct is at least 80% then return true.

Stepping through the code, I am answering at least 46 questions and getting all but 1 correct and it always returns false. What am I missing?

Ok thank you. But why did you down vote my question? I thought I asked a valid question. — David.Warwick, May 06 '15 at 01:16
Somebody must really hate newcomers here. BTW, your division will result to an integer and will never come out as 0.8. It will always result to 1 since you're dividing two integers. — Burning Crystals, May 06 '15 at 01:19
Ok got it. Thank you. I am used to programming in VBA, where you can divide 2 integers and the result can be a double. So to solve my issue, I am just going to change everything to a double. Thanks everyone. — David.Warwick, May 06 '15 at 01:22
possible duplicate of [Division of integers in Java](http://stackoverflow.com/questions/7220681/division-of-integers-in-java) — Selvin, May 06 '15 at 01:25

score 0 · Accepted Answer · edited May 06 '15 at 09:48

0

You are performing an integer division which will not return a floating or decimal value that is why your result is always false. Cast your variable to double or float to get your desired result.

double dResult = ((double)intCorrectAnswers / (double)intNumberOfQuestionsAsked);
if (intNumberOfQuestionsAsked >= 20 && (dResult >= 0.8)) {
    return true;
} else {
    return false;
}

edited May 06 '15 at 09:48

Ziem

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answered May 06 '15 at 01:21

Christian Abella

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Android If Statement Not Evaluating as Expected

1 Answers1