/*
 * Program to read floating-point numbers from input and report
 * how many fall into different ranges.  (Not an entirely sensible 
 * program, but an example of where an array makes sense.)
 *
 * Input:  Zero or more floating-point numbers, read from standard 
 *   input, terminated by anything other than a number. 
 *
 * Output:  Error messages for any input numbers that are "out of range" 
 *   (less than 0, or greater than or equal to N (=10 here)), then counts 
 *   of how many input numbers n are in each of the following ranges:
 *
 *   0 <= n < 1
 *   1 <= n < 2
 *   ....
 *   N-1 <= n < N
 */
#include <stdio.h>
#include <stdlib.h>

#define N 10

int main(void) {

	int counts[N] = { 0 };

	float input;
	int index;
	int i;

	printf("enter numbers (>= 0 and < %d), non-number to end:\n",
		N);

	while (scanf("%f", &input) == 1) {
		if ((input < 0) || (input >= N))  {
			printf("%f out of range\n", input);
		}
		else {
			index = (int) input;
			counts[index] += 1;
		}
	}

	for (i = 0; i < N; ++i) {
		printf("count of inputs >= %d and < %d:  %d\n", 
			i, i+1, counts[i]);
	}

	return EXIT_SUCCESS;
}