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=={{header|Commodore BASIC}}==
This solution was taken from the ZX Spectrum example further down, however, BASIC on the Spectrum features slightly different string handling functions. Most importantly, while the <code>val()</code> function on the Spectrum is able to parse complete mathematical expressions within
To get around this, this program utilizes BASIC's ability to parse expressions containing simple math operators, and is in fact technically a self-modifying program. Line 2005 is a line padded with colons which simply allow BASIC to join multiple statements on a single line, otherwise perform no operation. This reserves sufficient space in memory for inserting the user's expression—by overwriting the first several bytes of colons—which can then be evaluated in the normal course of the program's execution. The subroutine at 1400 initializes a simple translation table for exchanging the operators into their proper BASIC tokens. Parenthesis, numerals, and variable names do not need to be translated.
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