C++ Locale Library - iscntrl

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Description

It checks if character is a control character and a control character is a character that does not occupy a printing position on a display.

Declaration

Following is the declaration for std::iscntrl.

C++98

int iscntrl ( int c );

C++11

int iscntrl ( int c );

Parameters

c − Character to be checked, casted to an int, or EOF.

Return Value

It returns a value different from zero.

Exceptions

No-throw guarantee − this function never throws exceptions.

Example

In below example for std::iscntrl.

#include <stdio.h>
#include <ctype.h>
int main () {
   int i=0;
   char str[]="tutorialspoint.com \n sairamkrishna  \n";
   while (!iscntrl(str[i])) {
      putchar (str[i]);
      i++;
   }
   return 0;
}

The sample output should be like this −

Tutorialspoint.com