java 如何将（for 循环）转换为（do-while）循环？
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How to convert (for loop) to (do-while) loop?
提问by Mushfiqur rahman Sajid
This is the question of the book-Introduction to java BY Y Daniel liang.
这是Y Daniel liang 的《Java 简介》一书的问题。
The question is:- Convert for loop statement to a while loop and do-while loop?
问题是：- 将 for 循环语句转换为 while 循环和 do-while 循环？
int sum = 0;
for (int i = 0; i <= 7; i++)
sum = sum + i;
Please see my coding below. and what modification is needed. Actually I am pretty much confused on how to convert it to DO-WHILE Loop.
请参阅下面的我的编码。以及需要什么修改。实际上，我对如何将其转换为 DO-WHILE 循环感到非常困惑。
public class Convert_forLoop_toWhileLoop {
public static void main(String[] args) {
int sum = 0;
int i = 0;
do {
sum = sum + i;
System.out.println(sum);
i++;
} while(i <= 7);
}
}
回答by Marc
Like this:
像这样：
int sum = 0;
int i = 0;
do {
sum += i;
i++;
} while (i <= 7);
System.out.println("The sum of 0 thru " +i + " is:" + sum);
回答by Horonchik
Your answer doesnt support the case where i initial value is >= number of loops.
您的回答不支持 i 初始值 >= 循环次数的情况。
you need to first check the condition.
您需要先检查条件。
while (i <= 7) {
sum+=i;
// at the last statement increase i
i++
}
System.out.println(sum);
