Sorting arrays

http://pastebin.com/kADeuG2D // ===> Library needed for this code to work.
=========================================================================
#include <stdio.h>
#include <stdlib.h>
#include "VEKTOR.h"
#define kornjaca 31

int main()
{
    int i,n,x[kornjaca];

    printf("Unesite parametar N: ");
    do
    {
        scanf("%d",&n);
    }while(n<0||n>31);

    for(i=0;i<kornjaca;i++) x[i]=0;
    printf("Unesite redom elemente niza X: \n");
    for(i=0;i<n;i++)
{
        printf("x[%d]=",i+1);
        scanf("%d",&x[i]);
}
    sortiranjepoz(x,n);
    sortiranjeneg(x,n);
    for(i=0;i<n;i++) printf("\nx[%d]=%d",i+1,x[i]);
    printf("\nMade by: Mihajlo Radic");
    return 0;
}