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;
}