Name
iscntrl -- check if character is a control character (V7.0)
Synopsis
int r = iscntrl(int c);
Function
Checks if the Unicode character passed in c is a control character and returns True if it is, otherwise False. A control character is a character that is not printable, e.g. backspace, tab, line feed, escape, etc.

Designer compatibility
Unsupported

Inputs
c
character to test
Results
r
test result

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