fig08_04.c

C程序设计经典教程第5版程序示例,比较适合初级c语言的学生

/* Fig. 8.4: fig08_04.c
  Using functions isspace, iscntrl, ispunct, isprint, isgraph */
#include <stdio.h>
#include <ctype.h>

int main( void )
{
   printf( "%s\n%s%s%s\n%s%s%s\n%s%s\n\n", 
       "According to isspace:", 
       "Newline", isspace( '\n' ) ? " is a " : " is not a ",
       "whitespace character", "Horizontal tab",
       isspace( '\t' ) ? " is a " : " is not a ", 
       "whitespace character",
       isspace( '%' ) ? "% is a " : "% is not a ",
       "whitespace character" );

   printf( "%s\n%s%s%s\n%s%s\n\n", "According to iscntrl:", 
       "Newline", iscntrl( '\n' ) ? " is a " : " is not a ",
       "control character", iscntrl( '$' ) ? "$ is a " : 
       "$ is not a ", "control character" );

   printf( "%s\n%s%s\n%s%s\n%s%s\n\n", 
       "According to ispunct:",
       ispunct( ';' ) ? "; is a " : "; is not a ", 
       "punctuation character",
       ispunct( 'Y' ) ? "Y is a " : "Y is not a ",
       "punctuation character",
       ispunct( '#' ) ? "# is a " : "# is not a ",
       "punctuation character" );

   printf( "%s\n%s%s\n%s%s%s\n\n", "According to isprint:",
       isprint( '$' ) ? "$ is a " : "$ is not a ", 
       "printing character", 
       "Alert", isprint( '\a' ) ? " is a " : " is not a ",
       "printing character" );

   printf( "%s\n%s%s\n%s%s%s\n",  "According to isgraph:",
       isgraph( 'Q' ) ? "Q is a " : "Q is not a ",
       "printing character other than a space",
       "Space", isgraph( ' ' ) ? " is a " : " is not a ",
       "printing character other than a space" );

   return 0; /* indicates successful termination */

} /* end main */


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