为什么do not initialise statics to 0

In C++, static variables are initialized to zero by default. Therefore, explicitly initializing them to 0 is redundant and unnecessary. In fact, it can sometimes lead to issues such as undefined behavior and increased code size.

Additionally, if the static variable is of a non-trivial type, such as a class or struct, explicitly initializing it to 0 can actually cause problems. This is because the default initialization behavior for non-trivial types is to call the default constructor, whereas initializing to 0 would bypass this step and potentially lead to uninitialized data.

Therefore, it is generally recommended to avoid explicitly initializing static variables to 0 in C++.

相关问题

#43: FILE: test/test_timer.c:143: + static int init = 0;$ ERROR: do not initialise statics to 0

The error message is telling you not to initialize static variables to 0 explicitly. In C, static variables are implicitly initialized to 0, so there is no need to explicitly set them to 0.

To fix the error, you can simply remove the initialization of the static variable `init` to 0, and let the variable be implicitly initialized to 0. For example:

static int init;

This will ensure that the static variable is correctly initialized to 0, and avoid the error message.

Could not initialise E1/E20 device中文解决问题

很抱歉您在初始化E1/E20设备时遇到问题。这个问题可能有多种原因，我们来逐步进行故障排除。

首先，请确保设备已正确连接到计算机。检查电缆和连接是否牢固且正常工作。

接下来，请验证您是否已安装了E1/E20设备所需的驱动程序。访问制造商的网站，下载适用于您特定操作系统的最新驱动程序。

如果驱动程序已经安装，请尝试卸载并重新安装它们，以确保其正确配置。

如果仍然遇到问题，可能设备本身存在硬件问题。在这种情况下，建议联系制造商的支持团队或寻求专业帮助。

请注意，此处提供的故障排除步骤是一般建议，最好参考您的E1/E20设备的具体文档和支持资源，以获取更准确的故障排除指导。