C语言编写程序，模拟掷（两个）骰子的游戏。求解？

#include <stdio.h>

#include <stdlib.h>

#include<time.h>

#define bool int

#define FALSE 0

#define TRUE 1

int roll_dice();

void if_again(int,int);

void new_deal(int,int,int);

bool play_game();

int main()

{

play_game();

return 0;

}

int roll_dice()

{

int a=0,b=0;

srand((unsigned)time(NULL));

a=rand()%6+1;

// printf("\n a is :%d",a);

b=rand()%6+1;

//printf("\n b is :%d\n",b);

return a+b;

}

void if_again(int win,int lose)

{

printf("\nPlay again ?");

char ch='a';

scanf("%c",&ch);

if(ch=='y')

{

system("cls");

play_game();

}

if(ch=='n')

{

printf("\nWins: %d\tLosess: %d",win,lose);

return;

}

}

void new_deal(int result,int win,int lose)

{

int once_again;

once_again= roll_dice();

printf("You rolled: %d\n",once_again);

if( once_again==result )

{

printf("You win!\n");

win++;

if_again(win,lose);

}

else

{

once_again=roll_dice();

printf("You rolled: %d\n ",once_again);

if(once_again==7)

{

printf("You lose!\n");

lose++;

if_again(win,lose);

}else

new_deal(result,win,lose);

}

}

bool play_game()

{

int result,win=0,lose=0;

result=roll_dice();

printf("You rolled: %d\n",result);

if(result==7||result==11)

{

printf("You win!");

win++;

if_again(win,lose);

printf("\n");

}

else if(result==2||result==3||result==12)

{

printf("You lose!");

lose++;

if_again(win,lose);

printf("\n");

}

else

{

new_deal(result,win,lose);

}

return 0;

}