count digits, white space, others.

#include <stdio.h>
main()  /*count digits, white space, others */
{
   int c, i, nwhite, nother, ndigit[10];

   nwhite =nother = 0;
   for (i = 0; i < 10; i++)
        ndigit[i] = 0;
   while((c =getchar()) != EOF) {
       switch(c){
         case '0':case '1':case '2':case '3': case '4' :
         case '5':case '6':case '7':case '8':case '9':
             ndigit[c - '0']++;
             break;
         case ' ':
         case '\n':
         case '\t':
             nwhite++;
             break;
         default:
                nother++;
                break;
       }
   }
   printf("digits =");
   for(i = 0; i < 10; i++)
      printf(" %d", ndigit[i]);
   printf(", white space = %d, other = %d\n", nwhite, nother);
   return 0;
}