Question

ofstream outfile("book.dat",ios::out);

ofstream outfile("book.dat",ios::out);
if(!outfile)
{cerr<<"open error!"<<endl;
exit(1);}
for(i=0;i<k-1;i++)
{outfile<<book[i].num<<" ";outfile<<book[i].name<<" ";outfile<<book[i].author<<" ";
outfile<<book[i].press<<" ";outfile<<book[i].date<<" ";outfile<<book[i].amount<<" "<<endl;}
outfile.close();
}
if (j==0) {cout<<endl<<" 没有该书信息!!!"<<endl<<endl;
infile.close();};求注释 本人菜鸟 这都是什么意思啊

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Answer 1

C++内容 建议去看下 C++ primer plus 你就会懂了

追问

e 好的谢了