程序代码：

#include <stdlib.h>
#include <string.h>
#define N 4000000
#define LEN 36

int main(void)
{
    char *ar = (char*)malloc(sizeof(char)*N*(LEN+1));
    
    /* 或者
     * char **ar = (char**)malloc(sizeof(char*)*N);
     * ar[0]=(char*)malloc(sizeof(char)*(N+1));
     * 输入 ar[0]
     * ar[1]
     * ......
     */
    
    qsort(ar, N, (LEN+1)*sizeof(char), strcmp);
    
    return 0;
}