C ++写入文本文件问题 [英] C++ write to text file problem

问题描述

我不是c ++的新手，但我一整天都在尝试搜索谷歌，我无法找到问题的答案，所以我想我会在这里试试。我正在尝试编写一个我输入到文本文件的字符串变量。我已经设法让它做到这一点，但是当程序重新加载它时会覆盖我在顶部的任何东西。我可以将第二次输入的内容放在文本文件的底部而不是顶部吗？


视觉示例*


<首次运行>

牛

狗

猪

<第二次运行>

羊

狗

猪



任何帮助将不胜感激。

I''m not exactly a newbie to c++, but i''ve been trying all day and searching around google and i couldnt find an answer to the problem so I thought i''d try here. I''m trying to write a string variable that i have input to the text file. I''ve managed to get it to do this, but when the program reloads it overwrites whatever I had at the top. Is it possible for me to have what I have entered the second time to be placed at the bottom of the text file instead of at the top?


Visual example*

<First run>
Cow
Dog
Pig

<Second run>
Sheep
Dog
Pig


Any help would be appreciated thanks.

推荐答案

对不起，不确定如何编辑以前的帖子。只是想我应该添加我想要发生的事情。


牛

狗

猪

绵羊

Sorry, not sure exactly how to edit previous post. Just thought i should add what I wanted to happen.

Cow
Dog
Pig
Sheep

如果你在追加模式下打开文件，那么无论你写什么都到文件的末尾......


谢谢

Raghuram

Hi,
If you are opening the file in append mode then whatever u write goes to the end of the file...

Thanks
Raghuram

如果你在附加模式下打开文件，那么无论你写什么都写到文件的末尾...


谢谢

Raghuram

Hi,
If you are opening the file in append mode then whatever u write goes to the end of the file...

Thanks
Raghuram

感谢您的快速回复。你能指导我如何以追加模式打开文件吗？

Thanks for the quick response. Can you direct me exactly how to open the file in append mode?

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