C++ ofstream 换行符
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C++ ofstream line break
提问by Pablo Canseco
This is my code:
这是我的代码：
#include <iostream>
#include <fstream>
using namespace std;
int main()
{
ifstream ifile ("input.dat", ios::in);
ofstream ofile ("output.dat",ios::out);
int num;
ifile >> num;
ofile << num;
ofile << endl;
ofile << "Did we go to new line?";
ofile << endl;
return 0;
}
The problem is, everything in output.dat is on the same line. How can I resolve this?
问题是， output.dat 中的所有内容都在同一行上。我该如何解决这个问题？
Thanks!
谢谢！
EDIT: I was using Windows to see the files and Linux to compile. This is why I was running into this issue. Using cat output.daton the Linux side to see the file contents would have revealed that Windows vs. Linux line breaks are different at the time.
编辑：我使用 Windows 查看文件并使用 Linux 进行编译。这就是我遇到这个问题的原因。使用cat output.dat在Linux中看到文件的内容会发现，Windows与Linux的换行符是在不同的时间。
采纳答案by thiton
std::endl already inserts a linebreak, so you have linebreaks in your file. I assume you are generating your file on a LF system (Linux or other UNIX-like) and viewing it on a CRLF system. In this case, your linebreak won't show in the text editor as a linebreak. unix2dosis your friend.
std::endl 已经插入了换行符，因此您的文件中有换行符。我假设您在 LF 系统（Linux 或其他类 UNIX）上生成文件并在 CRLF 系统上查看它。在这种情况下，您的换行符不会在文本编辑器中显示为换行符。unix2dos是你的朋友。
回答by Pablo Canseco
Replace std::endlwith "\r\n"to get CRLF instead of just LF.
更换std::endl用"\r\n"得到，而不是仅仅LF CRLF。
