|Command||basic.casing Statement/BASIC Program
Applicable release versions: AP
|Category||BASIC Program (486)|
|Description||toggles case sensitivity relative to input data and string comparisons in the current program and any called subroutines.
The Pick/BASIC casing flag is automatically initialized to the case setting at TCL (which may be set using the "case" verb).
With "casing on", the strings "quit", "Quit", and "QUIT" are treated as three different strings of characters. With "casing off", they are all treated as the same string.
With "casing on", system date strings are in upper case as in R83.
See system(27) and system(28) for the ability to interrogate the current status of case sensitivity.
casing on crt "enter quit " : input quit if quit = "quit" then crt "lower case" end else crt "upper case" Entering "quit" causes the program to display "lower case". Any upper case character in input, like "Quit", would cause the program to display "upper case".