C++ 猜數字 求助

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

using namespace std;

void Start ();
void GetResults ();

int i, j, life, maxrand;
char c;


void
Start ()
{
i = 0;
j = 0;
life = 0;
maxrand = 6;

cout << "Select difficulty mode:\n"; // the user has to select a difficutly level
cout << "1 : Easy (0-15)\n";
cout << "2 : Medium (0-30)\n";
cout << "3 : Difficult (0-50)\n";
cout << "or type another key to quit\n";
c = 30;

cin >> c;         // read the user's choice
cout << "\n";

switch (c)
{
  case '1' : maxrand = 15; // the random number will be between 0 and maxrand
  break;
  case '2' : maxrand = 30;
  break;
  case '3' : maxrand = 50;
  break;
  default : exit(0);
  break;
}

life = 5;     // number of lifes of the player
srand( (unsigned)time( NULL ) ); // init Rand() function
j = rand() % maxrand; // j get a random value between 0 and maxrand

GetResults();

}


void
GetResults ()
{
if (life <= 0)
  // if player has no more life then he lose
{
  cout << "You lose !\n\n";
  Start();
}

cout << "Type a number: \n";
cin >> i;     // read user's number

if ((i>maxrand) || (i<0)) // if the user number isn't correct, restart
{
  cout << "Error : Number not between 0 and \n" << maxrand;
  GetResults();
}

if (i == j)
{
  cout << "YOU WIN !\n\n"; // the user found the secret number
  Start();
}

else if (i>j)
{
  cout << "Too BIG\n";
  life = life - 1;   // -1 to the user's "life"
  cout << "Number of remaining life: " << life << "\n\n";
  GetResults();
}

else if (i<j)
{
  cout << "Too SMALL\n";
  life = life - 1;
  cout << "Number of remaining life:\n" << life << "\n\n";
  GetResults();
}
}


int
main ()
{
cout << "** Jackpot game **\n";
cout << "The goal of this game is to guess a number. You will be ask to type\n";
cout << "a number (you have 5 guess)\n";
cout << "Jackpot will then tell you if this number is too big of too small compared to the secret number to find\n\n";
Start();
return 0;
}

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

using namespace std;

int main() 
{
  int Guess_number = 0; 
  int Guess_total = 0; 
  int difficult = 0; 
  int Guess_Key = 0; 
  
  char Answer; 
  
  int Cycle = 0; 
  
/* 
初級—猜0到99中任一數字，給使用者提示猜的太大或太小，直到猜到為止。
中級—猜0到99中任一數字，給使用者提示猜的太大或太小，最多猜五次。
高級—猜0到999中任一數字，給使用者提示猜的太大或太小，最多猜三次。
*/ 
  cout << "猜數字 (由JOT製作)" << endl;
  cout << "1:初級 (1~99，無限次數)" << endl;
  cout << "2:中級 (1~99，限猜10次)" << endl;
  cout << "3:高級 (1~999，限猜10次)" << endl;
  cout << "請選擇難度:"; 

  do
  {
      cin >> Answer; 
      Cycle = 0; 

      if( Answer == '1') 
      {
          difficult = 1; 
          srand((unsigned)time(NULL)); // init Rand() function
          Guess_Key = rand()%100;
          cout << "*** 難度一(數字隨機1到99，無限次數) ***" << endl;
      }
      else if( Answer == '2') 
      {
          difficult = 2; 
          srand((unsigned)time(NULL)); // init Rand() function
          Guess_Key = rand()%100;
          cout << "*** 難度二(數字隨機1到99，限猜10次) ***" << endl;
      }
      else if( Answer == '3') 
      {
          difficult = 3; 
          srand((unsigned)time(NULL)); // init Rand() function
          Guess_Key = rand()%1000;
          cout << "*** 難度三(數字隨機1到999，限猜10次) ***" << endl;
      }
      else
      {
          Cycle = 1; 
          cout << "請輸入數字: (1~3)" << endl;
      }
  }while(Cycle);

  do
  {
      Guess_total += 1;
      if(difficult == 2 && Guess_total > 10) 
      {
          cout << "十次機會已用完." << endl;
          cout << "正確答案為 " << Guess_Key << endl;
          break; 
      }
      if(difficult == 3 && Guess_total > 10)
      {
          cout << "十次機會已用完." << endl;
          cout << "正確答案為 " << Guess_Key << endl;
          break; 
      }

      cout << "請輸入你的幸運數字：";
      cin >> Guess_number;
      if(Guess_number > Guess_Key)
      { 
          cout << "         --//此數字小於 " << Guess_number << endl;
          Cycle = 1; 
      } 
      else if(Guess_number < Guess_Key)
      { 
          cout << "         --//此數字大於 " << Guess_number << endl;
          Cycle = 1; 
      } 
      else
      { 
          cout << "*** 恭喜你得到正確答案 ***" << endl;
          cout << "*** 總計猜了 " << Guess_total << " 次 ***" << endl;
          Cycle = 0; 
      } 
  }while(Cycle);

  system("PAUSE");
  return 0;
}