将#define DEBUG 1 [英] #define DEBUG 1

问题描述

我想有一个调试模式，所以如果

I'm trying to have a debugging mode on so if

#define DEBUG 1

我想给printf一些变量的值，如果

I want to printf some variable values and if

#define DEBUG 0

我想他们了。

问题是我有很多实现文件，我想这DEBUG变量可用于整个项目。现在我需要在foo1.c，foo2.c，foo3.c这似乎繁琐和容易出错且必须有一个更好的方式来编辑DEBUG变量。有什么建议？

The problem is I have many implementation files and I want this DEBUG variable to be available for the whole project. Right now I need to edit the DEBUG variable in foo1.c, foo2.c, foo3.c which seems tedious and error-prone and there must be a better way. Any suggestions?

推荐答案

编译时，你应该能够指定一个选项，你的编译器。例如，您可以调用GCC与 -DDEBUG 选项。

When compiling, you should be able to specify an option to your compiler. For example, you can call GCC with the -DDEBUG option.

在这种情况下，你会过得更好用：

In this case, you would be better using:

#ifdef DEBUG
#endif

或

#if defined(DEBUG)
#endif

如果这不是你现在做的方式。我很惊讶，你没有为你的项目全局头文件中。沿着线的东西：

if this is not the way you're doing it now. I'm surprised that you don't have a global header file for your project. Something along the lines of:

#ifdef DEBUG
#undef DEBUG
#endif
#define DEBUG 1

在一个名为debug.h的文件。在C程序中，可以通过使用包括本的#includedebug.h

in a file called "debug.h". In your C programs, you can include this by using #include "debug.h"

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