我不能正确划分两个数字 [英] I can not divide two numbers correctly

问题描述

int percent = (score/numberOfQuestions)*100;
progressText.setText(score+"/"+numberOfQuestions+"  "+percent+"%");

返回0％，不管我累了。我试图强制转换为int，双，浮法

returns 0% no matter what I tired. I tried casting it to int, double, float

为什么它返回0％，对于一些喜欢得分= 5 numberOfQuestions = 8？

Why does it return 0% for a number like score=5 numberOfQuestions=8?

推荐答案

问题是，计算两个整数给你结果的整数部分。因此，（得分/ numberOfQuestions）将始终为0。
你应该做的是

The problem is that divide two integers gives you the integer part of the result. So, (score/numberOfQuestions) will be always 0.
What you should do is

int percent = (score * 100 / numberOfQuestions);

然后 * 100 将首先执行，那么鸿沟会给你正确的结果。

Then the *100 will be executed first, then the divide will give you correct result.

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