12.22.cpp

这是C++的一部分练习程序!对初学者有一定的帮助作用。

#include <iostream.h>
void main()
{
	int a;
	cout<<"Enter an integer: ";
	cin>>a;
	cout<<"cin.rdstate():"<<cin.rdstate()<<endl
		<<"cin.eof():"<<cin.eof()<<endl
	    <<"cin.bad():"<<cin.bad()<<endl
		<<"cin.fail():"<<cin.fail()<<endl
		<<"cin.good():"<<cin.good()<<endl;
	cout<<"Enter a character: ";
	cin>>a;
	cout<<"cin.rdstate():"<<cin.rdstate()<<endl
		<<"cin.eof():"<<cin.eof()<<endl
	    <<"cin.bad():"<<cin.bad()<<endl
		<<"cin.fail():"<<cin.fail()<<endl
		<<"cin.good():"<<cin.good()<<endl;
	cin.clear();
	cout<<"\ncin.good():"<<cin.good()<<endl;
	cin.clear(ios::badbit);
	cout<<"cin.good():"<<cin.good()<<endl;
}