C++ game

#include <iostream.h>
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <dos.h>
#include <time.h>
int main ()
{
char k, val1;
int l, val2, ch1;
for (int m=0; m<=9; m++)
{
cout<<">>>>";
delay (100);
}
cout<<endl;
gotoxy(20,8); cout<<" _______________________________"<<endl;
gotoxy(20,9); cout<<"|   Press 1 to enter the game   |"<<endl;
gotoxy(20,10); cout<<"|   Press 0 to exit the game    |"<<endl;
gotoxy(20,11); cout<<"|    {LISTIKA ESTIMATOR}      |"<<endl;
gotoxy(20,12); cout<<"|_______________________________|"<<endl;
cout<<"Enter your choice {1/0}:";
cin>>ch1;
cout<<endl;
if (ch1==1)
{
	gotoxy(20,21); cout<<"***************************************"<<endl;
	gotoxy(20,22); cout<<"**  WELCOME TO LISTIKA ESTIMATOR     **"<<endl;
	gotoxy(20,23); cout<<"***************************************"<<endl;

	 srand(time(0));

      int number;

      number = rand() % 1000 + 1;

      int guess;

      do {

            cout << "Enter your estimate: ";

            cin >> guess;

            if (guess < number)

                  cout << "Your estimate is less, than the secret number" << endl;

            else if (guess > number)

                  cout << "Your estimate is more, than the secret number" << endl;

            else

                  cout << "Your guess is right!" << endl;

      } while (guess != number);

      system("PAUSE");

      return 0;
	}
else
 return 0;
}