cin.clear(istream::failbit)和cin.clear()的区别while(in>>ival,in.eof()){if(in.bad ())throw runtime_error("stream corrupted");if(in.fail ()){cerr

cin.clear(istream::failbit)和cin.clear()的区别while(in>>ival,in.eof()){if(in.bad ())throw runtime_error(stream corrupted);if(in.fail ()){cerr cin.clear()和cin.sycn()区别? cin.clear()和cin.sycn()区别 istream& operator >>(istream &,C &);这句怎样理解?我知道重载的是operator后面的>> 就是重载的cin>>但是istream 另外我发现istream只能写成这样.不能写成其他.如ist很奇怪.这个istream又是什么意思? 还有请问friend istream& operator >>(istream &,zhui &); 里istream是什么 c++ cin.clear()到底是什么意思呢int i; for(i=0;i C++中split怎么定义啊?#include #include #include #include #include split.husing std::cin; using std::cout;using std::endl; using std::getline;using std::istream; using std::string;using std::vector; using std::map;mapxref(istream& in,vector fi friend istream &operator>> friend istream&operator>>(istream &in,Point &p) ;friend istream&operator >>(istream &in,Point &p) ; 这里的&符号又是什么意思啊 clear clear clear cin是什么意思 cin>>choose; assert(!cin.fail()); for (cin >> ch; ch = '#'; cin >> 这个没有实现(istream &in,CCounter &obj);的作用! C-Cin什么意思 cin.getline(c,15,