/*
 * Program demonstrating use of recursion 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>

/* Count (print) numbers from start through limit */
void count_up(int start, int limit) {
	if (start > limit) {
		return;
	}
	else {
		printf("%d\n", start);
		count_up(start + 1, limit);
		return;
	}
}

/* Main program */
int main(void) {

	int start;
	int limit;
	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);
		}

		printf("\ncounting with recursion:\n");
		count_up(start, limit);
	}
	return 0;
}