The %03d is a printf-style format specifier.
03d是printf风格的格式说明符。
Note the use of printk here: this is the kernel printf function.
注意此处printk的用法：这是内核的printf函数。
The first parameter to printf is the address of an output string.
printf的第一个参数是输出字符串的地址。
In the example below, the printf (3) assumes that a pointer is 32-bits.
在下面的例子中，printf(3)假设指针是32位的。
After computing the factorial, you now want to print it out using printf.
计算了阶乘之后，现在需要用printf将其打印出来。
In this case, each string in the collection is passed as an argument to printf.
这样，集合的每一个字符串会被作为printf的参数传入。
The function printf (3) and related functions can be a major source of problems.
函数printf(3)及其相关函数都可能成为问题的根源。
Some of the most convenient features added in C99 are in the printf family of functions.
C99中增加的最方便的特性在printf函数家族中。
If I wanna say something, do something, then say something else, I just call printf twice.
如果我想说点什么，做点什么，再说点什么，我就得调用printf两次。
Similarly, functions such as printf and fprintf invoke the write system call to do their work.
类似地，printf和fprintf这样的函数调用write系统调用完成其工作。
Unresolved function names, like printf() in this case, are marked out in the object file produced.
在生成的目标文件中标记出了未解析的函数名，如printf() 。
Astute readers will notice that many of the functions called (such as printf) are missing from the output.
聪明的读者可能会注意到，很多函数调用(例如printf)在这个输出中都没有出现。
But what actually happens when your program tries to call printf — the real way this works — is a bit more complex.
但是，当您的程序尝试调用printf时，也就是说实际操作的时候，具体发生的事情却稍微有点复杂。
Use printf tokens for dynamic content in a full sentence rather than breaking up the sentence into multiple strings.
在完整的句子中使用printf标记来标记动态内容而不要将句子分割为多个字符串。
When the SPU needs to do any standard library calls like printf or exit, it has to call back to the main thread.
当SPU需要执行任何标准的库调用时，例如 printf或exit，它都需要回调主线程。
This can be a pain at first — some programmers don't realize that printf and many other functions actually return a value.
起初，这可能是一个痛苦的问题——有些程序员并没有认识到printf和很多其他函数实际上也会返回一个值。
In c, a common mistake is to pass attacker data into format string parameters (such as the first parameter of printf (3)).
在c语言中，一个常见的错误是将攻击者的数据传递到格式化字符串参数中(例如printf(3)的第一个参数)。
Nonetheless, the amount of space tied up by all those duplicate copies of printf() would give the system a very bloated feel.
尽管如此，printf()的所有副本所占用的空间数量也会让系统 显得非常臃肿。
When writing rules which will potentially handle multiple similar devices, udev's printf-like string substitution operators are very useful.
当要编写规则处理多个相似的设备时，udev可以使用类似C语言的printf函数中的字符串替换操作符。
Then formatting the output of the data is a matter of either using the printf() function, which is similar to C/C++, or using proper HTML table tags.
然后设定数据输出的格式可以使用printf()函数（类似于C/C++），也可以使用适当的HTML表标记。
Logging within the kernel is performed using the printk function, which shares similarity with its user space counterpart, printf (print formatted).
内核的日志是通过printk函数实现的，它与用户空间对应函数printf(按格式打印)具有相似的作用。
Similarly, when a small integer (char, short, int) is passed into printf (3), it will be widened to 64-bits and the sign will be extended if appropriate.
类似地，当一个小整数（char、short、int）被传递给printf (3) 时，它会扩展成 64位的，符号会适当地进行扩展。
You can simulate this yourself by using a printf call and the strerror function, which returns a pointer to the textual representation of the current errno value.
您可以通过使用printf调用和strerror函数(该函数返回当前errno值的文字表示形式的指针)来模拟此程序。
When you aren't quite sure why a function doesn't behave as expected, print a few variables to the console with printf or its equivalent to see just what's going on.
如果不能确定为何函数没有按预期工作，用printf或类似的工具在控制台上打印几个变量就可以了解幕后发生了什么。
In this example, the special replacement form will be the same printf for every line, so it is pre-stored in the FORMATTER variable before the second for loop begins.
在本例中，特殊替换形式对于每一行来说都将是相同的printf，因此它将在第二个for循环开始之前被预先存储到FORMATTER变量中。
printf format strings can also write data (using the %n directive) and reveal arbitrary data, making this a critical vulnerability. Following is an example of this mistake
printf 的格式化字符串也可以输出数据（使用 %n指令），并且可以暴露任意的数据，这就使得这个问题成为一个非常严重的漏洞。
That is, in Vimscript, printf doesn't print a formatted version of its list of data arguments; it returns a string containing a formatted version of its list of data arguments.
也就是说，在Vimscript中，printf并不会输出其数据参数列表的格式化后的版本；它会返回一个字符串，其中包含了数据参数列表的格式化后的版本。
It is needed for the file opening, closing, reading, and writing functions (fopen , fclose , fgets , getc , and so on), for the printf family of functions, and for the setvbuf function.
文件的打开、关闭、读和写函数(fopen 、fclose 、fgets 、getc等等)、printf函数系列和setvbuf函数都需要它。
Common functions used for debugging, such as printf, write, and so on, can sometimes change the behavior of a program in the case of multi-threaded applications, making them hard to debug.
有一些常见的调试函数，如printf、write等，可能会在多线程应用程序的情况下更改一个程序的行为，使得它们难以调试。
One detail you can't see from the output is that perror() writes its message to the standard error channel (stderr); the printf() call in Listing 1 is writing to the standard output channel (stdout).
您无法从输出中看到的一个细节是，perror() 将其消息写入标准错误通道 (stderr)；清单1中的printf()调用将写入标准输出通道 (stdout)。
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