#include <stdio.h>
#include <ctype.h>

#define ctype( func, data1, data2 ) printf("%s( %s ) = %d\t\t%s( %s ) = %d\n",\
		 #func, #data1, func(data1), #func, #data2, func(data2))

main()
{
    ctype( isalnum, '7', '*' );
    ctype( isalpha, 'a', '7' );
    ctype( iscntrl, ' ', '\t');
    ctype( isdigit, '7', 'a' );
    ctype( isgraph, '7', ' ' );
    ctype( islower, 'a', 'A' );
    ctype( isprint, ' ', '\t');
    ctype( ispunct, '*', ' ' );
    ctype( isspace, '7', '\t');
    ctype( isupper, 'a', 'A' );
    ctype( isxdigit, '7', 'a' );

    printf( "tolower( 'A' ) = %c\n", tolower('A'));
    printf( "toupper( 'a' ) = %c\n", toupper('a'));
}