64,849
社区成员
![](https://csdnimg.cn/release/cmsfe/public/img/topic.427195d5.png)
![](https://csdnimg.cn/release/cmsfe/public/img/me.40a70ab0.png)
![](https://csdnimg.cn/release/cmsfe/public/img/task.87b52881.png)
![](https://csdnimg.cn/release/cmsfe/public/img/share-circle.3e0b7822.png)
#include <iostream>
using namespace std;
int main()
{
short input;
do
{
cout<<"Enter your number : ";
cin>>input;
if (cin.fail())
{
cin.clear();
cin.sync();
}
} while(input != 4);
return 0;
}