fig16_19.cpp

来自「经典vc教程的例子程序」· C++ 代码 · 共 45 行

// Fig. 16.19: fig16_19.cpp
// Using functions isspace, iscntrl, ispunct, isprint, isgraph
#include <iostream.h>
#include <ctype.h>

int main()
{
   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\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;

   return 0;
}