std :: ofstream :: write添加字符 [英] std::ofstream::write adds characters

问题描述

我正在尝试使用std::ofstream::write方法写入二进制文件.我发现有些字符不是按原样书写的，例如:

I am trying to write binary file using std::ofstream::write method. I found out, that some characters are not written as they are, for example:

std::ofstream in("testout");
int i =10;

in.write((const char *)(&i), sizeof(i));
in.close();

return 0;

会将以下内容写入二进制文件:0d 0a 00 00 00 为什么还会出现其他0d字节?

will write the following into a binary file: 0d 0a 00 00 00 Why is there additional 0d byte appearing?

推荐答案

打开时，您必须指定std::ofstream::binary.

You´ll have to specify std::ofstream::binary when opening.

否则，在Windows的文本文件模式下，在写入/读取文件时，程序中的\n(0x0a)将被转换为\r\n(0x0d 0x0a).

Else, on Windows in textfile mode, \n (0x0a) in a program will be converted to/from \r\n (0x0d 0x0a) when writing/reading the file.

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