/*
 * Program demonstrating use of different kinds of loops to "count"
 * (print numbers from start to limit).
 * 
 * Input:  two integers n, m
 *
 * Output:  all integers starting with n and ending with m.
 */
#include <stdio.h>

int main(void) {

	int start;
	int limit;
	int n;
	printf("enter start, limit\n");
	if (scanf("%d %d", &start, &limit) != 2) {
		printf("error:  input not numeric\n");
	}
	else {

		if (start > limit) {
			printf("start %d is greater than limit %d\n", 
				start, limit);
		}

		/* while loop */
		printf("\ncounting with while loop:\n");
		n = start;
		while (n <= limit) {
			printf("%d\n", n);
			n = n + 1;
		} 

		/* for loop */
		printf("\ncounting with for loop:\n");
		for (n = start; n <= limit; n = n + 1) {
			printf("%d\n", n);
		}

		/* do-while loop (doesn't do what we intend) */
		printf("\ncounting with do-while loop:\n");
		n = start;
		do {
			printf("%d\n", n);
			n = n + 1;
		} while (n <= limit);
	}
	return 0;
}