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分享ifstream in("D:\\doc.doc");
//ifstream in("D:\\pdf.pdf");
in.seekg(0, ios::end);
int len = in.tellg();
in.seekg(ios::beg);
char* str = new char[len];
in.read(str, len);
in.close();
ofstream fout("D:\\result.doc",ios::binary);
//ofstream fout("D:\\result.pdf",ios::binary);
fout.write(str, len);
fout.close();