/*Program 2: Write a program that reads a sequence of characters, 
character '%' will terminate the input. 
finds the number of lower case letters, the number of upper case letters, and the number of digits. 
*/

#include<stdio.h>
int main(){
	char ch;
	int lower=0, upper=0, digits=0;
	while((ch=getchar())!='%'){
		if(ch>='a' && ch<='z')
			lower++;
		else if(ch>='A' && ch<='Z')
			upper++;
		else if(ch>='0' && ch<='9')
			digits++;
	}
	printf("lower=%d, upper=%d,digits=%d\n", lower, upper, digits);
	return 0;
}