#include<stdio.h> int main(void) { int digit,letter,other; char ch;
int i; digit=letter=other=0; printf("Enter 10 characters:"); for(i=1;i<=10;i++){ ch=getchar(); if(ch>='a'&&ch<='z'||(ch>='A'&&ch<='Z')) letter++; else if(ch>='0'&&ch<='9') digit++; else other++; } printf("letter=%d,digit=%d,other=%d ",letter,digit,other);
return 0; }