小编use*_*950的帖子

你能帮我解决这个问题吗？

当我尝试在Mysql workbench中的数据库菜单下单击"查询数据库"时.它给了我一个错误:

Cannot Connect to Database Server

Your connection attempt failed for user 'root' from your host to server at 
127.0.0.1:3306:Can't connect to mysql server on '127.0.0.1'(10061)

Please:

 1. Check that mysql is running on server 127.0.0.1
 2. Check that mysql is running on port 3306 (note: 3306 is the default, but this can 
    be changed)
 3. Check the root has rights to connect to 127.0.0.1 from your address (mysql rights 
    define what clients can connect to the server …

我只是在R代码下运行,但我收到错误消息...任何人都可以帮助我如何在我的机器上运行此代码.谢谢.

这是命令:

load(file = "c:\\abcdeXXX.RData")

这是产生的错误消息:

Error in if (!grepl("RD[AX]2\n", magic)) { : argument is of length zero

我试图在ubuntu 12.04中的eclipse中运行以下代码,但它一直给我错误.你能告诉我为什么会这样吗？谢谢.

   #include <iostream>
   using namespace std;

  int main()
  {
  cout << "Hello World!" << endl;
  return 0;
  }

符号'std'无法解析符号'cout'无法解析符号'endl'无法解析