LinuxQuestions.org - Entries for October 2021

Alphanumeric Calculator: GNU Bison Specification

Posted 10-01-2021 at 07:34 PM by astrogeek
Updated 10-07-2021 at 01:34 PM by astrogeek (Rev. 3 source / typo)

This post is Part 4 of the Alphanumeric Calculator program group.

Note: This is Rev. 3 Bison version and requires Rev. 3 Flex version.

Copy the code below into a file named alphacalc.y in your local build directory for this project, the same directory where Makefile and alphacalc.l are located.

I wrote this version using GNU Bison 3.7.6 and gcc 10.3 on a Slackware -current platform, but it should work using any not-too-old Bison with one small change...

astrogeek

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Posted in Alphanumeric Calculator, Tutorials and Templates

Views 706 Comments 0 astrogeek is offline

Alphanumeric Calculator: Flex Specification

Posted 10-01-2021 at 07:29 PM by astrogeek
Updated 10-07-2021 at 01:47 AM by astrogeek (Rev. 3 source)

This post is Part 3 of the Alphanumeric Calculator program group.

Note: This is Rev. 3 version and works with Rev. 3 Bison specification.

Copy the code below into a file named alphacalc.l in your build directory for this project where Makefile and alphacalc.y are located.

This is the specification file for a Flex generated lexical analyzer, also called a lexer or scanner.

A brief description of the file contents follows, but if you are...

astrogeek

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Posted in Alphanumeric Calculator, Tutorials and Templates

Views 481 Comments 0 astrogeek is offline

Alphanumeric Calculator: Makefile

Posted 10-01-2021 at 07:29 PM by astrogeek
Updated 10-03-2021 at 12:45 PM by astrogeek (meh... tpoys)

This post is Part 2 of the Alphanumeric Calculator program group.

Copy the code below into a file named Makefile in your local build directory for this project, the same directory where alphacalc.l and alphacalc.y are located.

Read and follow comment about TABs at top of the file.

I have it configured to build with gcc and -std=c17, although this project does not use any features specific to the c17 standard. If you use a different compiler or an older gcc...

astrogeek

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Posted in Alphanumeric Calculator, Tutorials and Templates

Views 431 Comments 0 astrogeek is offline

Alphanumeric Calculator: The Source

Posted 10-01-2021 at 07:28 PM by astrogeek
Updated 10-12-2021 at 11:52 AM by astrogeek (Test cases, rearrange page)

Alphanumeric Calculator: The Source

To make it easy to find the source code I have moved the links to the top, along with links to test cases for my code and your build! You will find a brief discussion of the origins of this project below, as well as instructions for building and running the program.

The Source Code

Two source files and a Makefile are all that is required to build this project. Follow each of the links below to copy/paste the source...

astrogeek

Moderator

Posted in Alphanumeric Calculator, Tutorials and Templates

Views 570 Comments 0 astrogeek is offline

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