++ i和i ++之间的差异 [英] Diffrence between ++i and i++
问题描述
我在C语言课程中进行了期中考试。
我在100分中失去了18分，因为我并没有将这个杀戮事实归结为：
in（for循环）这两种方式在增加循环之间没有区别：
for（i = 0; i< 10; ++ i）
和
for（i = 0; i< 10; i ++）
（请注意i ++和++之间的差异）
您对此有何评论。
I made my midterm exam in the C language course.
I lost 18 marks off 100 because I didn''t relaize this killing fact:
in (for loops) there is no difference between incrementing the loop in
these two ways:
for (i=0; i < 10 ; ++i)
and
for (i=0; i < 10 ; i++)
( notice the difference is between i++ and ++i )
What are your comments on this.
推荐答案
lr******@yahoo.com （Luai）写道：
lr******@yahoo.com (Luai) writes:
in（for循环）这两种方式增加循环之间没有区别：
for（i = 0; i< 10; + + i）
和
for（i = 0; i< 10; i ++）
in (for loops) there is no difference between incrementing the loop in
these two ways:
for (i=0; i < 10 ; ++i)
and
for (i=0; i < 10 ; i++)
为什么你觉得它们可能有什么不同？
Why and how did you think they might be different?
On Sun，2004年4月11日20:26:04 +0000，Luai wrot e：
On Sun, 11 Apr 2004 20:26:04 +0000, Luai wrote:
我在C语言课程中进行了期中考试。
我在100分中失去了18分，因为我并没有将这个杀戮事实归结为：
in（for循环）这两种方式增加循环之间没有区别：
for（i = 0;我< 10; ++ i）
和
for（i = 0; i< 10; i ++）
（注意区别在于i ++和++ i）
您对此有何评论。
I made my midterm exam in the C language course.
I lost 18 marks off 100 because I didn''t relaize this killing fact:
in (for loops) there is no difference between incrementing the loop in
these two ways:
for (i=0; i < 10 ; ++i)
and
for (i=0; i < 10 ; i++)
( notice the difference is between i++ and ++i )
What are your comments on this.
听起来不错。通常，++ i和i ++的含义是你在c中学到的第一个
的东西之一。所以，如果你一直到期中没有
学习这个，这不是一个好兆头。现在你知道如果你想要一个好的成绩（分数），你需要在决赛前学习一下
。
HTH
--Mac
Sounds about right. Usually the meaning of ++i and i++ is one of the first
things you learn in c. So, if you got all the way to the midterm without
learning this, it is not a good sign. Now you know you need to study a
little more before the final if you want a good grade (mark).
HTH
--Mac
lr * *****@yahoo.com （Luai）写道：
我在C语言课程中进行了期中考试。
因为我没有减掉18分不要重新理解这个杀戮事实：
in（for循环）这两种方式增加循环之间没有区别：
for（i = 0; i< 10; ++ i）
相当于：
i = 0;
while（i< 10）
{
++ i;
}
和
for（i = 0; i< 10; i ++）
相当于：
i = 0;
while（i< 10）
{
i ++;
}
您对此有何评论。
I made my midterm exam in the C language course.
I lost 18 marks off 100 because I didn''t relaize this killing fact:
in (for loops) there is no difference between incrementing the loop in
these two ways:
for (i=0; i < 10 ; ++i)
which is equivalent to:
i = 0;
while ( i < 10 )
{
++i;
}
and
for (i=0; i < 10 ; i++)
which is equivalent to:
i = 0;
while ( i < 10 )
{
i++;
}
What are your comments on this.
因为在这两种情况下都是
的副作用（增量i），其值被丢弃，
实际上没有差别。
HTH
问候
-
Irrwahn Grausewitz（ir*******@freenet.de）
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Since in both cases the iteration statement is evaluated only
for its side effect (increment i), while its value is discarded,
there''s effectively no difference.
HTH
Regards
--
Irrwahn Grausewitz (ir*******@freenet.de)
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