最近在学条件状态好难啊，这个当输入字母时，是死循环？

#include<iostream>
#include <string>
#include<stdexcept>
#include <bitset>
using namespace::std;
int main(){
   


int ival;
while(cin>>ival,!cin.eof())
{
    if(cin.bad())
         throw runtime_error("IO stream corrupted");
    if(cin.fail())
    {
         cerr<<"bad data,try again";
         cin.clear(istream::failbit);
         continue;
     }
     
}
}