Terminal control/Positional read
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
The REXX doesn't have any cursor or screen management tools, but some REXX interpreters have
added the functionality via different methods.
Below is one example PC/REXX has implemented:
<lang rexx>
/*REXX program demonstrates reading a char at specific screen location.*/
/*──────────────────────────────────────────────────────────────────────*/
/*─────────────────────examples are for PC/REXX only.───────────────────*/
/*──────────────────────────────────────────────────────────────────────*/
row=20 /*point to row twenty. */
col=55 /*point co column fifty-five. */
howMany=3 /*read a trio of characters. */
stuff=scrread(row,col,howMany) /*this'll do it. */
other=scrRead(40,55,2) /*same thing, but for row forty. */
</lang>