Ответ:
#include <iostream>
using namespace std;
int main()
{
int a;
cin >> a;
cout <<"The next number for the"<< endl;
cout << "number " << a << " is " << a+1 << "." << endl;
cout << "The previous number for the" << endl;
cout << "number " << a << " is " << a-1 << ".";
return 0;
}
