C++ 使用 fstream 附加到文件而不是覆盖
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原文地址: http://stackoverflow.com/questions/15056406/
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Append to a File with fstream Instead of Overwriting
提问by Springfox
I'm trying to create a basic highscore system for a project I'm working on.
我正在尝试为我正在从事的项目创建一个基本的高分系统。
The problem I'm having is, although I write the names into my main they just overwrite the previous.
我遇到的问题是，虽然我将名称写入我的主要名称，但它们只是覆盖了以前的名称。
Currently I have this:
目前我有这个：
void ManagePoint::saveScore(string Name, int Score)
{
ofstream newFile("scorefile.txt");
if(newFile.is_open())
{
newFile << Name << " " << Score;
}
else
{
//You're in trouble now Mr!
}
newFile.close();
}
and for testing I'm adding them like so:
为了测试，我像这样添加它们：
runner->saveScore("Robert", 34322);
runner->saveScore("Paul", 526);
runner->saveScore("Maxim", 34322);
On load display all that will appear is Maxim's score, how can I loop through and save them all, or append all or something?
在加载显示时，所有将出现的是 Maxim 的分数，我如何循环并保存它们，或者附加所有内容或其他内容？
回答by Joseph Mansfield
You need to open the file with the append mode:
您需要使用附加模式打开文件：
ofstream newFile("scorefile.txt", std::ios_base::app);
There are various other modestoo.
还有各种其他模式。
