3-10

#include<stdio.h>
int main(void)
{
    int blank,digit,other;
    char ch;
    int i;
    blank=digit=other=0;
    printf("Enter 10 characters:");
    for(i=1;i<=10;i++){
        ch=getchar();

        switch (ch){
              case' ':
              case'\n':
                  blank++;
                  break;
              case'0':case'1':case'2':case'3':case'4':
              case'5':case'6':case'7':case'8':case'9':
                  digit++;
                     break;
              default:
                     other++;
                     break;
        }
    }
    printf("blank=%d,digit=%d,other=%d\n",blank,digit,other);

    return 0;
}