Lexicography Quicksort C

#include<stdlib.h>
#include<stdio.h>
#include<string.h>

int partition(int p, int r, char *v[]) {
    int i, j = p;
    char * pivo = v[r], * temp;
    for(i = p; i < r; i++) {
        if(strcmp(v[i], pivo) < 0) {
            temp = v[j];
            v[j] = v[i];
            v[i] = temp;
            j++;
        }
    }
    v[r] = v[j];
    v[j] = pivo;
    return j;
}

void quicksort(int p, int r, char *v[]) {
    int q;
    if(p < r) {
        q = partition(p,r,v);
        quicksort(p,q-1,v);
        quicksort(q+1,r,v);
    }
}

//usage
int main(void) {
    char *nomes[] = {"Samuel","Aline","Abner","Luiz","Absolut"};
    quicksort(0,4,nomes);
    int i=0;
    for(i; i < 5; i++)
        printf("%s\n", nomes[i]);
}