Thread: scanf in bubblesort

here is my bubblesort code:

Code:

#include <stdio.h>

int N;
void swap(int *p, int *q)
{
    int tmp;
	
    tmp = *p;
    *p = *q;
    *q = tmp;
}

void bubble (int a[N])
{
	int i, j;
	
	for (i = 0; i < N; i++)
		for (j = N - 1; i < j; j--)
		if (a[j - 1] > a[j])
			swap(&a[j - 1], &a[j]);
}

int	main (void)
{	
	int i;
	int a[N];
	printf ("Enter the amount of numbers to be sorted: ");
	scanf ("%d\n", &N);
	printf ("Enter your numbers:\n");
	for (i = 0; i < N; i++){
		scanf (" %d", &a[i]);}
	bubble (a);
	for (i = 0; i < N; i++)
	printf("%d ", a[i]);
	printf("\n");
	printf("\n");
	return 0;
}

what i can't understand is why main only calls printf ("Enter your numbers:\n") after the for loop and not before it as it is so in the code. any suggestions? also any ideas on how to re-declare N so it is not a global variable?

ok cheers. i removed \n from scanf and it works now. yeah i do know that i didn't declare N properly. it has to be define N etc etc.