C语言小程序，七、石头剪刀布

本来挺简单的一个程序，但突然想把《Friends》给糅合进去，就多花了一些心思，这是我写过最有趣的程序了。

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

int getrand()
{
        srand(time(NULL));
        return rand()%3;
}

int win_lose(int choice)
{
        int rand = 0;
        char *p[3] = {"SCISSORS", "STONE", "CLOTH"};
        rand = getrand();
        printf("\nThe system give the %s.\n",p[rand]);
        rand++;

        if(choice == rand)                                                      //even
        {
                printf("\nJoey:\tHei, How you doing? We call it even, all right?\n");
                printf("\tAnd if you are Chandler M. Bing, of course you will say ok.\n");
                return 0;
        }
        else if(rand==choice-1 || rand==choice+2)       //win
        {
                printf("\nMonica:\tOf course the winner is Me. I knew it, you such a loser,\n");
                printf("\tyou can't win me ever!\n");
                printf("Ross:\tIt can't be, I am Profess Geller and I am a doctor.\n");
                printf("\tI can't lose, you must cheat me last time. \n");
                return 1;
        }
        else                                                                            //lose
        {
                printf("\nRachel:\tOh my god! Oh my god! I can't believe this. Phoebe,\n");
                printf("\tyou are my best friend, can we forget this?\n");
                printf("Phoebe:\tOk, But it is when you say that you don't love Ross any more.\n");
                return -1;
        }
}

int main()
{
        int choice = 0;
        int flag = 0;
        int rot = 0;
        char ch;
        system("clear");
        printf("***********************************************");
        printf("\n\tLets play a game about <Friends>.\n");
        printf("***********************************************");
        printf("\nJanice:\tYou don't want to see me any more, right? \n\tSo just chose a number quickly:\n");
        printf("\n1.SCISSORS\n2.STONE\n3.CLOTH\n");
        do
        {
                printf("\nInput your choice:");
                scanf("%d",&choice);
                if(choice>0 && choice<4) 
                {
                        flag = win_lose(choice);
                        while((ch=getchar())!='\n' && ch!=EOF);
                        printf("\nGunther:I want to see Rachel");
                        if(flag == -1)
                                printf(" again");
                        printf(", so please replay it.(y/n)");
                }
                else
                {
                        while((ch=getchar())!='\n' && ch!=EOF);
                        printf("\nMonica:\tWhat's the matter with you! What you need is just chose\n");
                        printf("\ta number from 1 to 3. So are you ready?(y/n)");
                }

                ch = getchar();
        }
        while(ch=='y' || ch=='Y' || ch=='\n');

        printf("\nGoodbye！\n");

        return 0;
}

谨以此程序纪念下《Friends》，Monica、Ross、Joey、Rachel、Chandler、Phoebe。

还请诸位大侠自动忽略那蹩脚的英语。