stopping an infinite loop.

[math8]

The code below gives me the maximum odd number and the minimum even number of a list of numbers that the user type. However, for the loop to stop the user needs to type 1000. Is there a better way (without having to have a "stopping" number, just in case I need this number to be somewhere on the list) to get the same results?

#include <iostream>  
#include <iomanip>  
#include <cmath>  
#include <string>  
using namespace std;  




int main()  
{ 
    
    int x, maxi, mini;
    
    
    
    cout<<"Enter a list of numbers and 1000 as the last number: ";
    maxi=0;
    mini=1000;
    
    for(;;)
    {
           cin>>x;
           if(x==1000){break;}
           if((x > maxi) && (x%2==1)){ maxi=x;}
           else if((x<mini)&& (x%2==0)){mini=x;}
    }
    cout<<"maximum odd number is: "<<maxi<<endl<<endl;
    cout<<"minimum even number is: "<<mini<<endl<<endl;
 	
	system("pause");
	return 0;
}