Xcode 新手，不能使用 cout，只有 std::cout 有效
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/19202531/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
New to Xcode, can't use cout, only std::cout works
提问by FoxMcWeezer
I'm not new to programming but I am new to C++ using Xcode as the IDE. I am not allowed to use cout << "hello"; to print, the compiler complains and only works when I use std:cout <<. What setting in Xcode should be fixed in order to get this working the way I'm supposed to write it for class? Thanks!
我对编程并不陌生，但我是使用 Xcode 作为 IDE 的 C++ 新手。我不允许使用 cout << "hello"; 要打印，编译器会抱怨并且仅在我使用 std:cout << 时才起作用。应该修复 Xcode 中的哪些设置才能使其按照我应该为课堂编写的方式工作？谢谢！
回答by rici
Add using std::cout;somewhere close to the start of your program, after the includes.
添加using std::cout;靠近程序开头的某个地方，在includes.
Please avoid the temptation to use using namespace std;. It's really a bad habit. Just because you see other people doing it, doesn't make it right. See the FAQ: Why is "using namespace std" considered bad practice?
请避免使用的诱惑using namespace std;。这真的是一个坏习惯。仅仅因为你看到其他人在做，并不意味着它是对的。请参阅常见问题解答：为什么“使用命名空间 std”被认为是不好的做法？
(Or, of course, you could just get use to typing std::cout.)
（或者，当然，您可以习惯键入std::cout。）
回答by saif almazrouei
I had the same problem but I fixed it. You can simply write the following after the #include:
我有同样的问题，但我修复了它。您可以在 之后简单地写下以下内容#include：
using namespace std;
