/* Example: Counting letters A, B, C in the stream of text usig case */
	#include <stdio.h>
	void main() {
	int ch;
	int a = 0, b = 0, c = 0;
	/* Accumulating counters in the loop */
	while ((ch = getchar()) != EOF)
	switch (ch) {
	case 'a':
	case 'A':
	a++; break;
	case 'b':
	case 'B':
	b++; break;
	case 'c':
	case 'C':
	c++; break;
	}
	/* Printing results */
	printf(" Numbers of characters: ");
	printf("a %d; b %d; c %d; ", a, b, c);
	}