blocks|key|493125|text|您的for-loop未正确定义。i从money+=+200开始。您希望重复循环，直到i+<=+0为止。所以你要求我从200开始，而不是大于0。这就是为什么根本不执行循环的原因。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|493126|相反，您希望为您的情况使用一个while循环。它更具可读性：|493127|while+(money+>=+costTogether)+{
++++money+=+money+-+costTogether;
++++rounds%2B%2B;
}|code-block|syntax|javascript|493128|如果要使用for循环，可以这样声明它：|493129|for+(int+i+=+money;+i+>=+costTogether;+i+-=+costTogether)+{
++++rounds%2B%2B;
}|493130|entityMap^0|2|3|G|1|I|5|16|6|0|F|5|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|11|8|@$9|12|A|13|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|14|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|15|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|16|8|@]|D|@]|E|$K|L]]|$1|Q|3|-4|5|6|7|17|8|@]|D|@]|E|$]]]|R|$]]

Your <code>for</code>-loop is not defined correctly. <code>i</code> starts at <code>money</code> = 200. You want to repeat the loop as long as <code>i &lt;= 0</code>. So you require i starting at 200 while not being larger than 0. That's why your loop isn't executed at all.

Instead prefer a <code>while</code> loop for your case. It is more readable:

<pre><code>while (money &gt;= costTogether) {
 money = money - costTogether;
 rounds++;
}
</code></pre>

If you want to use a for loop, you can declare it like that:

<pre><code>for (int i = money; i &gt;= costTogether; i -= costTogether) {
 rounds++;
}
</code></pre>

blocks|key|493151|text|您的停止条件是错误的，所以循环永远不会被执行。您应该使用>=代替。此外，您也从不更改或使用i。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|493152|下面是一个经过修正的版本，使用currMoney而不是i更有意义。|493153|int+rounds+=+0;
for+(int+currMoney+=+money;+currMoney+>=+costTogether;+currMoney+-=+costTogether)+{
++++rounds%2B%2B;
}|code-block|syntax|javascript|493154|但很明显，正如@Fredszaq在回答中指出的那样，你只需要一个简单的划分：|493155|int+rounds+=+money+/+costTogether;|493156|entityMap^0|S|2|19|1|0|F|9|R|1|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@$9|Y|A|Z|B|C]|$9|10|A|11|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|12|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|13|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|14|8|@]|D|@]|E|$K|L]]|$1|Q|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|R|$]]

Your stopping condition is wrong, so the loop is never exectued. You should use <code>&gt;=</code> instead. Also, you never change nor use <code>i</code>.

Here is a corrected version, using <code>currMoney</code> instead of <code>i</code> to be more meaningful.

<pre><code>int rounds = 0;
for (int currMoney = money; currMoney &gt;= costTogether; currMoney -= costTogether) {
 rounds++;
}
</code></pre>

But obviously here, you only need a simple division as @Fredszaq pointed out in his answer:

<pre><code>int rounds = money / costTogether;
</code></pre>

blocks|key|923353|text|此条件i+<=+0不为真，而且可能不会增加。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|923354|我想这是个错误，|923355|当他们改变环境时，你需要意识到这一点。|923356|entityMap^0|3|6|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|O|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|P|8|@]|D|@]|E|$]]|$1|J|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|K|$]]

This condition <code>i &lt;= 0</code> is never true and probably dont get incremented

i guess its a typo ,

Greater and Lessthan you need to be aware as they change context .

blocks|key|493219|text|当循环运行时，您只是以一种迂回的方式递增rounds。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|493220|循环运行时，i+<=+0+-+i开始时等于money，后者等于200，因此循环从不运行，并且循环值不会增加。|493221|您也没有在循环中更改i+--我想您更愿意在循环中使用i+>=+0和递减i吗？|493222|for+(int+i+=+money;+i+>=+0;+rounds%2B%2B)+{
++++money+=+money-costTogether;
++++i--;
}|code-block|syntax|javascript|493223|entityMap^0|K|6|0|6|6|F|1|L|5|0|A|1|Q|6|Z|1|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|T|8|@$9|U|A|V|B|C]|$9|W|A|X|B|C]|$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|10|8|@$9|11|A|12|B|C]|$9|13|A|14|B|C]|$9|15|A|16|B|C]]|D|@]|E|$]]|$1|J|3|K|5|L|7|17|8|@]|D|@]|E|$M|N]]|$1|O|3|-4|5|6|7|18|8|@]|D|@]|E|$]]]|P|$]]

You're only incrementing <code>rounds</code>, in a roundabout way, when the loop runs.

The loop runs while <code>i &lt;= 0</code> - <code>i</code> starts equal to <code>money</code>, which equals 200, so the loop never runs and the rounds value is not incremented.

You're also not changing <code>i</code> in the loop - I suspect you'd rather want while <code>i &gt;= 0</code> and decrement <code>i</code> in the loop?

<pre><code>for (int i = money; i &gt;= 0; rounds++) {
 money = money-costTogether;
 i--;
}
</code></pre>

blocks|key|923451|text|一般来说，在for的三个部分中使用相同的变量是很好的。注意，循环初始化部分(第一个int+i+=+money)只运行一次，在循环期间不修改I。此外，条件从一开始就是假的(200+<+0)，因此循环甚至不运行一次。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|923452|我认为您要寻找的是一个简单的int部门，只需将for块替换为：|923453|rounds+=+money+/+costTogether;|code-block|syntax|javascript|923454|entityMap^0|15|D|2D|7|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|T|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|U|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

In general, it is good to use the same variable in the 3 parts of the for. Note that the loop initialization part (the first one <code>int i = money</code>) is only run once, and you don't modify i during the loop. Furthermore, the condition is false from the beginning (<code>200 &lt; 0</code>) so the loop is not even run once

I think what you are looking for is a simple int division, just replace your for block with this :

<pre><code>rounds = money / costTogether;
</code></pre>

I'm trying to calculate how many rounds can a player play lotto and joker games with a fixed amount of money.

<pre><code>public static void example () {
 int money = 200;
 int lottoCost = 4;
 int jokerCost = 3;
 int costTogether = lottoCost+jokerCost;
 int rounds = 0;

 for (int i = money; i &lt;= 0; rounds++) {
 money = money-costTogether;
 }

 System.out.println("With " + money + " euros, you can play "
 + rounds + " rounds.");
 System.out.println("");

}
</code></pre>

That code currently prints the text "With 200 euros, you can play 0 rounds."
So it doesn't add a +1 to the rounds variable. What am I doing wrong?

Subtracting a variable in a loop in Java

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我试着计算一个玩家能用固定数量的钱玩多少回合的乐透和小丑游戏。public static void example () {    int money = 200;    int lottoCost = 4;    int jokerCost = 3;    int costTogether = lottoCost+j...

问在Java循环中减去一个变量
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