Thread: Beginner needs help CS114

Basic while loop program enter in numbers determines wether odd or even, positive or negative.

My big problem is that when I input Cntl+Z to end the program it adds +1 to both my negative and even values. Is there a way to avoid this? thanks

Code:

void main()
{
	int input,
		 
    int positive,negative,odd,even;
    
	positive=0;
	negative=0;
        odd=0;
	even=0;
    
    while (!cin.eof()) 
	{
	cout <<"enter value:\n";
	cin >>input;
	
    if ((input%2==0))
    even = even ++;
	if ((input%2!=0)) 
	odd = odd ++;
	
    if (input > 0)
    positive = positive ++;
	if (input < 0)
	negative = negative ++;
	
	}
	cout <<"positive"<<positive<<endl;
	cout <<"negative"<<negative<<endl;
	cout <<"even"<<even<<endl;
	cout <<"odd"<<odd<<endl;
}