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

char *sources[] = {"this", "is", "a", "program", "for", "testing"};


void printarray (char **stringarray, int length)
{
    int i = 0;
    for (i; i < length; i++)
    {
        printf("%s ",stringarray[i]);
    }
    printf("\n");

}

int compare (const void *element1, const void *element2)
{
    return strcmp(*(const char**)element1,*(const char **)element2);
}

int main (int argc, const char * argv[])
{
    printarray(sources,6);
    qsort(sources, 6, sizeof(char *), compare);
    printarray(sources,6);
        return 0;
}