/* write a program that reads a sequence of chars, EOF (end of file) terminates the input
in C, to enter EOF from keyboard you will use a combo of the following chars:
ENTER-ctrl-D
ENTER will count toward the input. If you don't want it you can subtract 1 from count_others

the program counts the number of 'a'/'A', the number of 'b'/'B' and the number of 'c'/'C'
and the program counts the number of other chars that are not listed above
use switch */


#include<stdio.h>
int main(){
	char ch;
	int countA=0, countB=0, countC=0, count_others=0;
	while((ch=getchar())!=EOF){
		switch(ch){
			case 'a':
			case 'A':
				countA++;
				break;
			case 'b':
			case 'B':
				countB++;
				break;
			case 'c':
                        case 'C':
                                countC++;
				break;
			default:
				count_others++;
				break;
		}
	}
	printf("countA=%d, countB=%d,countC=%d,count_others=%d\n",countA,countB, countC, count_others);
	return 0;
}