面向对象程序设计概述

rroropenfile.";\rreturn(O);EvaluationWarning:ThedocumentwascreatedwithSpire.PDFfor.NET.\rcharch;\rwhile((ch=in.get())!=EOF)\routchar(toupper(ch));\rreturn0;\r)\r[97]P@\r#include<fstream.h>\r#include<ctype.h>\rmain()\r{fstreamin;\rin.open("filel.txt",ios::in);\rif(!in)\r{cerrnErroropenfllec.\rreturn(O);\r)\rfstreamout;\rout.open(Hfile2.txtn,ios::app);\rif(!out)\r{cerrnErroropenfile.\rreturn(O);\r)\rcharch;\rwhile((ch=in.get())!=EOF)\routchar(toupper(ch));\rreturn0;\r)\r[9_18]P:EvaluationWarning:ThedocumentwascreatedwithSpire.PDFfor.NET.\r#include<iostream.h>\r#include<fstream.h>\rmain()\r{ofstreampout("stock.txt'r);\rif(!pout)\r{coutKcannotopenphonefile\nK;\rreturn1;\r)\rpout"shenfazhan00000l\n";\rpoutHshanghaiqiche600104\nn;\rpout"guangjunengyuan000096\n";\rpout.close();\rreturn0;