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Test Cases: Limits

Posted 10-10-2021 at 11:53 PM by astrogeek

This post is part of the Alphanumeric Calculator program group.

Test cases to validate limits and range of expressions, undefined input errors.

Test cases input file:

Code:

cat tests_limits
/* Tests detection and reporting of limits and unexpected input
*/
######## Valid - Min/Max values
999999999999
-999999999999
nine hundred ninety nine billion nine hundred ninety nine million nine hundred ninety nine thousand nine

...

astrogeek

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Posted in Alphanumeric Calculator, Tutorials and Templates

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Test Cases: Associativity and Precedence of Math Expressions

Posted 10-10-2021 at 11:53 PM by astrogeek

This post is part of the Alphanumeric Calculator program group.

Test cases to validate associativity and precedence handling in math expressions.

Test cases input file:

Code:

cat tests_precedence
/* Test of associativity and precedence in math expressions
   Input here is symbolic for clarity, alpha input will test same, not shown
   Remember: This is integer math as performed by basic C oeprators on long long values
*/
numeric

...

astrogeek

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Posted in Alphanumeric Calculator, Tutorials and Templates

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Test Cases: Optional AND Input and Output Handling

Posted 10-10-2021 at 11:52 PM by astrogeek
Updated 10-11-2021 at 12:10 AM by astrogeek

This post is part of the Alphanumeric Calculator program group.

Test cases to validate handling of optional "and" in english numeric expressions.

Use of "and" in input stream is always optional. For example, either of these basic forms is allowed:

Code:

one thousand one hundred one
one thousand one hundred and one

By default output follows input usage per expression - if "and" appears in the...

astrogeek

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Posted in Alphanumeric Calculator, Tutorials and Templates

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Test Cases: Multi-line Input

Posted 10-10-2021 at 11:52 PM by astrogeek

This post is part of the Alphanumeric Calculator program group.

Test cases to validate multi-line input expressions.

By design a single expression is terminated by a line break. But you may enter expressions which span multiple lines by escaping the line break with a backslash as the last character before the line break similar to the usage in C preprocessor macro definitions, among others.

Test cases input file:

Code:

cat tests_multiline

...

astrogeek

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Posted in Alphanumeric Calculator, Tutorials and Templates

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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...

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