/*
 * Program to experiment with array access
 * (example of for loops also).
 */
#include <stdio.h>

#define ARRAY_SIZE 10

/* 
 * second parameter is size of array -- could just use ARRAY_SIZE but
 * this way is more general 
 */
void print_array(int nums[], int size) {
    printf("\n");
	for (int i = 0; i < size; ++i) {
		printf("%d\n", nums[i]);
	}
    printf("\n");
}

int main(void) {
	int nums[ARRAY_SIZE];
	for (int i = 0; i < ARRAY_SIZE; ++i) {
		nums[i] = i+1;
	}
	print_array(nums, ARRAY_SIZE);
	printf("enter an index, ideally between 0 and %d\n", ARRAY_SIZE-1);
	int index;
	if (scanf("%d", &index) == 1) {
        nums[index] = -1;
        print_array(nums, ARRAY_SIZE);
    } else {
        printf("not an integer value\n");
    }
	printf("enter a count, ideally between 0 and %d\n", ARRAY_SIZE);
	int count;
	if (scanf("%d", &count) == 1) {
        print_array(nums, count);
    } else {
        printf("not an integer value\n");
    }
	return 0;
}