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