Terminal control/Positional read

From Rosetta Code
Revision as of 01:39, 19 October 2010 by MikeMol (talk | contribs) (Apply the Terminal Control semantic property, as a task.)
Terminal control/Positional read is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page.

Determine the character displayed on the screen at column 3, row 6 and store that character in a variable.

BASIC

ZX Spectrum Basic

<lang basic> 10 REM The top left corner is at position 0,0

20 REM So we subtract one from the coordinates
30 LET c$ = SCREEN$(5,2)</lang>

REXX

This example is incorrect. Please fix the code and remove this message.

Details: No actual description of how to do this task is included.

The Rexx programming language does not include terminal control as part of the language. However, it might be possible to output ANSI control sequences, and there are various workarounds which are platform specific: