#include <iostream>
using namespace std;
int main()
{
char ch;
int n;
cout << "input an integer:";
cin.get(ch);
cin >> n;
cout << "ch=" << ch << endl;
cout << "n=" << n << endl;
cin.ignore(1000, '\n');
cout << "input an integer:";
cin.get(ch);
cin.putback(ch); //退回 一个字符
cin >> n;
cout << "ch=" << ch << endl;
cout << "n=" << n << endl;
return 0;
}