是否可以在Cobol中添加内嵌注释 [英] Is it possible to add inline comments in Cobol

问题描述

大多数现代编程语言都提供了一种添加内嵌注释的方法，通常是使用换行符指示注释的结束的那些，以及用于指示注释开始的任意分隔符或序列的序列，同时使该行的开始是解释的指令。

Most modern programming languages give a way to add inline comments, generally those that use a newline character to indicate the end of a comment, and an arbitrary delimiter or sequence of tokens to indicate the beginning of a comment, while letting the beginning of the line being an interpreted instruction.

在COBOL中，注释整行记录（可以通过在第7列中插入一个星号（ * ）来完成）

In COBOL, while commenting a whole line is well documented (it can be done by putting an asterisk symbol (*) in column 7), finding documentation on whether or not you can comment the rest of the line beginning at an arbitrary position is harder.

问题是：你可以评论行开头的其余部分吗？在COBOL中的任意位置？

The question is: can you comment the rest of a line beginning at an arbitrary position in COBOL?

想象＃是这种注释的特殊字符，一个假想的例子：

Imagining that # is the special character for this kind of comment, here is a fictive example of what is seeked:

   *--- This structure is a dummy example
    01 MY-STRUCTURE.
        05 MY-VARIABLE PIC X VALUE '-'. # Valid values are in {-, a, b}

推荐答案

Pre Cobol 2002否

Pre Cobol 2002 No

在Cobol 2002 *>中介绍。请参阅 Cobol 2002 和搜索内嵌注释，其中给出此示例：

In Cobol 2002 *> was introduced. see Cobol 2002 and search in-line comment, which give this example:

05 Field-X Pic XX *> Used in calculating the current THINGY
...
MOVE ABC to XYZ  *> Current-XYZ
             LMN *> Saved XYZ

还有其他一些例外

• 在 Exec Sql - End-Exec 中。您可以对某些SQL供应商（例如Oracle）使用内嵌注释（/ * * /）。这不是真的Cobol虽然但是嵌入语言，通常通过预编译器实现。


• 可以是允许在行注释中的Cobols实现


• 默认情况下，许多pre Cobol 20002编译器仅查看第7列到第72列。因此列1到6 以及第71列之后的任何内容都可以包含注释。

• In Exec Sql - End-Exec. you are able to use in-line comments (/* */) for some SQL venders (e.g. Oracle). This is not true Cobol though but an embeded language, generally implemented via a pre-compiler. Othere Exec End-exec statement may also allow in-line comments.
• The may be Cobols implementations that allow in line comments
• By default many pre Cobol 20002 compiler's only look at columns 7 to 72. So columns 1 to 6 and anything after column 71 can hold comments.

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