1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <ctype.h>
4
5 int is_not_print( int ch )
6 {
7 return !isprint( ch );
8 }
9
10 static int(*test_func[])( int ) = {
11 iscntrl,
12 isspace,
13 isdigit,
14 islower,
15 isupper,
16 ispunct,
17 is_not_print
18 };
19 #define N_CATEGORIES ( sizeof( test_func ) / sizeof( test_func[0] ) )
20
21 char* label[] = {
22 "control",
23 "whitespace",
24 "digit",
25 "lower case",
26 "upper case",
27 "punctuation",
28 "non-printable"
29 };
30
31 int count[ N_CATEGORIES ];
32 int total;
33
34 int main()
35 {
36 int ch;
37 int category;
38
39 while( (ch = getchar()) != EOF )
40 {
41 total += 1;
42 for( category = 0; category < N_CATEGORIES; category += 1 )
43 if( test_func[ category ]( ch ) )
44 count[ category ] += 1;
45 }
46
47 if( total == 0 )
48 printf( "No characters in the input!\n" );
49 else
50 {
51 for( category = 0; category < N_CATEGORIES; category += 1 )
52 {
53 printf( "%3.0f%% %s characters\n", count[ category ] * 100.0 / total, label[ category ] );
54 }
55 }
56 return EXIT_SUCCESS;
57 }
