// 20161009平均字元長度.cpp : 定義主控台應用程式的進入點。
//

#include "stdio.h"


int main()
{
	char a[100] = { '\0' };
	while (gets(a) != EOF)
	{
		float character = 0;
		float space = 1;
		int i=0;

		while (a[i] == ' ')
		{
			i++;
		}

		for (i; a[i]!='\0'; i++)
		{
			if (a[i] == ' ')
			{
				space++;
				i++;
				while (a[i] == ' ')
				{
					i++;
				}
				if (a[i] == '\0')
				{
					space--;
					break;
				}
			}
			if (a[i] != '\0'&&a[i] != ' ')
				character++;
		}
		printf("Average word length: ");
		printf("%.1f\n",character / space);
		char a[100] = { '\0' };
	}

    return 0;
}