程序代码：

#include<stdio.h>
#include<string.h>
void sort(char *a[], int n)
{
    int i, j, m = 0;
    char **p, t;
    p = a + 0;
    for (i = 0; i < n - 1; i++)
    {
        m = i;
        for (j = i + 1; j < n; j++)
            if (strcmp(p[m], p[j]) > 0)
                m = j;
        if (m != i)
        {
            t = *p[i];
            *p[i] = *p[m];
            *p[m] = t;
        }
    }
}

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

int main()
{
    void sort(char *a[], int n);
    void print_string(char *a[], int n);
    char *a[3] = { "Holle","Welcome","Cart" };
    sort(a, 3);
    print_string(a, 3);
    return 0;
}