Written practice questions about COBOL

There are very few COBOL tutorials on the market these days, let alone practice problems

But Tan Haoqiang's "COBOL Language" is a good textbook, and I have it. PDF tutorials can be given to you

As long as you understand the above program and write it yourself, I think you can learn it well!!

Tan Haoqiang's COBOL is very good, and there are pdf files, if necessary, I can send it to you As for the practice questions, there are relatively few interview questions.

If you use it wrongly, you can't use leading, leading refers to the first letter of W, if not, it doesn't count, you can check the Cobol Enterprise Cobol for Zos language reference version 3 release 4

Generally, it is used to look up from the beginning.

inspect cs tallying count-0 for all 'w'.

If you want to locate it.

For example, start looking after the first e.

inspect cs tallying count-o for all 'w' after initial 'e'.

I don't know much about the passing by of the task, but have you ever made any mistakes like misspelling, repeated assignment, capitalization, etc.?

However, in some cases, we are reluctant to build a memeber alone to deal with the Cobol program, so we sometimes choose to write the CoBL program directly in the compilation link file, so that COBOL is compiled as the stream data of JCL.

The following can be followed by the arguments in the main program.

The corresponding subroutine can also be accepted with the same type size.

Generally, it is possible to distinguish between documents.

Let's take an analogy. When defining a file, you need to define the record of the file.

In the input file, the name of the record is defined as in-rec

01 in-rec.

03 in-a pic x(03).

03 in-a pic 9(03).

In the output file 1, the record name is defined as out1-rec

01 out1-rec.

03 out1-a pic x(03).

03 out1-a pic 9(03).

In the output file 2, the record name is defined as out2-rec

01 out2-rec.

03 out2-a pic x(03).

03 out2-a pic 9(03).

write out1-rec.It is to write the force file 1.

write out2-rec.It is to write the force file 1.

About rewrite

The file is opened in the IO way.

I won't talk about the specifics.

You can refer to COBOL for beginner to mastery.

With the cobol written by Tan Haoqiang, there are detailed explanations.

What is the length of your input data? What is the length of the output data?

Is there a JCL?

COBOL language is a process-oriented high-level programming language, mainly used for data processing, and is currently the most widely used high-level language in the world. COBOL is the abbreviation of Common Business-oriented Language, which originally meant a business-oriented language. It uses more than 300 English words as reserved words to describe data characteristics and data processing processes in a form close to written English language, making it easy to understand and learn.

COBOL language is a high-level language specially designed for enterprise management, which can be used for statistical reporting, financial accounting, planning, job scheduling, information retrieval, and personnel management.