mkewuid脚本函数为命令行上提供的每个字符串输出一个记录行。
The mkewuid script function will output a record line for each string of characters provided on the command line.
该函数获得与传递的错误有关的字符串，并输出这些字符串。
This obtains the string associated with the error that is passed in and prints it.
如果使用CODEUNITS来获取字符的长度，则用作字符串函数输入的CODEUNITS的不同会导致输出的不同。
If you take the length of a character in CODEUNITS, the output differs according to the CODEUNITS used as inputs to the string function.
字符串变量的长度：substr函数的输入参数，决定了结果字符串的期望长度或length函数的输出。
Length of a string variable: Input argument for the SUBSTR function, which determines the desired length of the resulting string or output of the length function.
arrayconcat函数获取一个字符串数组作为输入并在字符串输出中返回联接后的这些字符串。
The array concat function takes an array of strings as an input and returns a concatenation of the strings into a single string output.
虽然双引号隐式地把数据类型定义为字符串，但是以上方法显式地把concat 2函数的输入和输出类型定义为字符串。
Though the double quotes implicitly types data as strings, the above method explicitly types both the input and output to the concat2 function as strings.
正如您可以从输出(清单2)中看到的，perror函数显示了传递给它的字符串，后跟冒号、空格，接着是当前errno值的文字表示形式。
As you can see from the output (Listing 2), the perror function displays the string you pass to it, followed by a colon, a space, and then the textual representation of the current errno value.
该函数的每次调用都应该返回输出的其中一行作为字符串。
Each call to the function should return one line of input as a string.
函数的作用是：输出格式化字符串到流（例如：文件或数据库）。
The vfprintf() function writes a formatted string to a specified output stream (example: file or database).
子函数允许任意长度的被加数，被加数和结果都是字符串，可以直接输出。
Subroutine allow arbitrary length summand, summand, and the result is a string, you can output directly.
函数的作用是：输出字符串。
函数的作用是：输出字符串。
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