以下代码片段打印“hello”多少次？ [英] How many times will the following code fragment print “hello”?

问题描述

for（i = 2; i< 100; i = i * i）printf（hello）;



我尝试过：



for（i = 2; i< 100; i = i * i）printf（hello）;

解决方案

Quote：

以下代码片段打印hello多少次？

我会说3次，但我错了。

  for （i =  2 ; i<  100 ; i = i * i）{
 printf（  hello）; 
} 

第一次迭代：i = 2，i< 100 - > 你好

第二次迭代：i = 4，i< 100 - > 你好

第3次迭代：i = 16，i< 100 - > 你好

第4次迭代：i = 256，i> = 100 - >循环退出



C中有很多关于循环的资源，你最喜欢的搜索引擎会告诉你比我复制粘贴的速度快得多。

for (i = 2; i<100; i = i*i) printf("hello");

What I have tried:

for (i = 2; i<100; i = i*i) printf("hello");

解决方案

Quote:

How many times will the following code fragment print "hello"?

I would say 3 times, but I can be wrong.

for (i = 2; i < 100; i = i * i) {
   printf("hello");
}

1st iteration: i = 2, i < 100 -> "hello"
2nd iteration: i = 4, i < 100 -> "hello"
3rd iteration: i = 16, i < 100 -> "hello"
4th iteration: i = 256, i >= 100 -> loop-exit

There are a lot of resources about loops in C, your favorite search engine will tell you where much faster than I could copy-paste.

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