Use isspace, iscntrl, ispunct, isprint and isgraph. - C++ Data Type

C++ examples for Data Type:char

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Description

Use isspace, iscntrl, ispunct, isprint and isgraph.

Demo Code

#include <iostream> 
#include <cctype> // character-handling function prototypes 
using namespace std; 

int main() //  w  ww . ja  v a  2  s.co m
{ 
    cout << "According to isspace:\nNewline " 
       << ( isspace( '\n' ) ? "is a" : "is not a" ) 
       << " whitespace character\nHorizontal tab " 
       << ( isspace( '\t' ) ? "is a" : "is not a" ) 
       << " whitespace character\n" 
       << ( isspace( '%' ) ? "% is a" : "% is not a" ) 
       << " whitespace character\n"; 

    cout << "\nAccording to iscntrl:\nNewline " 
       << ( iscntrl( '\n' ) ? "is a" : "is not a" ) 
       << " control character\n" 
       << ( iscntrl( '$' ) ? "$ is a" : "$ is not a" ) 
       << " control character\n"; 

    cout << "\nAccording to ispunct:\n" 
       << ( ispunct( ';' ) ? "; is a" : "; is not a" ) 
       << " punctuation character\n" 
       << ( ispunct( 'Y' ) ? "Y is a" : "Y is not a" ) 
       << " punctuation character\n" 
       << ( ispunct( '#' ) ? "# is a" : "# is not a" ) 
       << " punctuation character\n"; 

    cout << "\nAccording to isprint:\n" 
       << ( isprint( '$' ) ? "$ is a" : "$ is not a" ) 
       << " printing character\nAlert " 
       << ( isprint( '\a' ) ? "is a" : "is not a" ) 
       << " printing character\nSpace " 
       << ( isprint( ' ' ) ? "is a" : "is not a" ) 
       << " printing character\n"; 

    cout << "\nAccording to isgraph:\n" 
       << ( isgraph( 'Q' ) ? "Q is a" : "Q is not a" ) 
       << " printing character other than a space\nSpace " 
        << ( isgraph( ' ' ) ? "is a" : "is not a" ) 
        << " printing character other than a space" << endl; 
}

Result


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