/* Example: Average line length
	Author: Peter Brusilovsky
	*/
	#include <stdio.h>
	void main () {
	int c, nl;
	long nc;
	nl = 0; nc = 0;
	while((c = getchar()) != EOF) {
	if(c == ' ')
	++nl;
	++nc;
	}
	if(nl)
	printf("Average line length is %.2f ", nc / (float) nl);
	}