Sortiranje imena

#include <stdio.h>
#include <stdlib.h>
#define N 20
#define D 30
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
void uredi (char niz[][D+1],int n)
{
    int i,j,m;
    char p[D+1];
    for(i=0;i<n-1;i++){
        for(m=i,j=i+1;j<n;j++)
            if(strcmp (niz[j],niz[m])<0) m=j;
    if( m!=i)
    {
        strcpy (p, niz[i]);
        strcpy (niz[i],niz[m]);
        strcpy (niz[m],p);
      }
   }
}
int main(int argc, char *argv[]) {
    char niz[N][D+1];
    int n=0,i;
    printf("NIZ IMENA? \n");
    do
        gets(niz[n]);
        while (strlen(niz[n++]) > 0);
        n--;
        uredi (niz,n);
        printf ("\n UREDJENI NIZ IMENA: \n");
        for (i=0;i<n;puts (niz[i++]));
    return 0;
}