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Re:请教if(cin)/ if(scanf)的具体用法!In Reply To:Re:请教if(cin)/ if(scanf)的具体用法! Posted by:hong_liming at 2003-07-06 22:45:29 一定要先读入再判断吗? 还见过有人用 if(cin>>...) //Proc 这样有问题么? > 我是这么用的 > void main() > { > do > { > cin>>....... > if(!cin)break; > //processing..... > }while(true); > } > > 至于scanf(),返回值应该是实际读入数据项的个数,如果返回零就表示没有读入任何数据 Followed by:
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