help sos!c++primer 例题!
铁血萌少 2009-10-26 09:43:13 #include<iostream>
using namespace std;
int main()
{
int ival;
while (cin>>ival,!cin.eof())
while(!cin.eof())
{
if(cin.bad())
throw runtime_error("IO stream corrupted");
if(cin.fail())
{
cerr<<"bad date,try again"<<endl;
cin.clear(istream::failbit);
continue;
}
}
}
为何无法运行