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C++ Programming/Code/Standard C Library/Functions/iscntrl
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iscntrl
#include <cctype>
int iscntrl( int ch );
The iscntrl() function returns non-zero if its argument is a control character (between 0 and 0x1F or equal to 0x7F). Otherwise, zero is returned.
Related topics isalnum - isalpha - isdigit - isgraph - isprint - ispunct - isspace - isxdigit