void main()
{
	int num1;
	cout << "Insert a number\n ";
	cin >> num1;
	cout << "The opposite number from the first function is: \n";
	oppo1(num1); cout << "\n";
	cout <<"The opposite number from the second function is:\n"<< oppo2(num1)<<endl;
	cout << "compare which one is bigger: \n";
    getbig(num1) == 0 ? cout << " they are equal\n":getbig(num1)==1? cout<<"original number is bigger\n":cout<<"The opposite number is bigger\n" ;
}