c언어 난수 생성 질문드립니다.

#include <stdio.h>
#include<stdlib.h>
#include<time.h>
#include<windows.h>
 
int running(int var1)
{
	if (var1 == 0)	//20%확률(이김) 일때 1리턴
		return 1;
	else
		return 0;	//80%확률(짐) 일때 0리턴
}
 
int win(int money, int var2)
{
	if (var2 == 0) //1등 3배
		return money * 3;
	else if (var2 == 1) //2등 2배
		return money * 2;
}
 
int lose(int money)
{
	return money;
}
 
int game(int var1, int var2, int* money, int betting)
{
	int res;
	//srand((unsigned)time(NULL));
	res = running(var1);
	if (res == 1)
	{
		if (var2 == 0)
		{
			*money = *money + win(betting, var2);
			printf("money : %10d \t betting: %10d Win*3\n", *money, betting);
			return 0;
		}
		if (var2 == 1)
		{
			*money = *money + win(betting, var2);
			printf("money : %10d \t betting: %10d Win*2\n", *money, betting);
			return 0;
		}
		//*money = *money + win(betting, var2);
		//printf("money : %10d \t betting: %10d Win\n", *money, betting);
		//return 0;
	}
	else if (res == 0)
	{
		*money = *money - lose(betting);
		printf("money : %10d \t betting: %10d Lose\n", *money, betting);
		return 1;
	}
//	return money;
 
}
int main(void)
{
	int i = 0, var1, var2, end;
	static int cnt = 0;
	static int cnt2 = 0;
	int money = 10000000000; int betting = 10000;
 
	srand((unsigned)time(NULL));
	//_sleep(100);
	var1 = rand() % 5;
	var2 = rand() % 2;
 
 
 
 
 
	////for (i = 0; i < 20; i++)
	////{
	////	var1 = rand() % 5;
	////	var2 = rand() % 2;
	////	printf("%d %d\n", var1, var2);
	////}rand값확인 유효값확인완료
	//
	////money=game(var1, var2, &money, betting);
	////printf("money : %4d\n", money);
	//for (i = 0; i < 20; i++)
	//{
	//	var1 = rand() % 5;
	//	var2 = rand() % 2;
	//	game(var1, var2, &money, betting);
	//	printf("money : %4d\n", money);
	//}	
	////1회게임완료
 
 
	while (1)
	{
		srand((unsigned)time(NULL));
		//_sleep(100);
		var1 = rand()% 5;
		var2 = rand()% 2;
		betting = 10000;
		end = game(var1, var2, &money, betting); cnt++;
 
		if (end == 1)	//패했을시
		{
 
			while (1)	//이길때까지 반복
			{
				srand((unsigned)time(NULL));
				//_sleep(100);
				betting *= 2;
 
				var1 = rand() % 5;
				var2 = rand() % 2;
				end = game(var1, var2, &money, betting); cnt++; cnt2++;
 
				if (end == 0)
					break;
 
				if (money < 0)
				{
					printf("bankrupt!!!\n");
					printf("count : %d, continuous cnt : %d\n", cnt, cnt2 + 1);
					return 0;
				}
				//_sleep(7);
			}
		}
 
		if (money < 0)
		{
			printf("bankrupt!!!\n");
			printf("count : %d, continuous cnt : %d\n", cnt, cnt2 + 1);
			return 0;
		}
		printf("count : %d, continuous cnt : %d\n", cnt, cnt2 + 1);
		cnt2 = 0;
	}
	return 0;
}